Fix dependabot uv runs

[yorickdowne]

What I did

Successfully tested changes to __version__ so dependabot works. Particularly, change attr to file: uv can read the version without needing to import ethstaker_deposit, which hasn't been built in dependabot's restricted build environment

[remyroy]

I'm getting this error message when trying to run uv run ethstaker_deposit --version on this PR:

error: Failed to generate package metadata for `ethstaker-deposit @ editable+.`
  Caused by: The build backend returned an error
  Caused by: Call to `setuptools.build_meta.build_editable` failed (exit status: 1)

[stdout]
running egg_info

[stderr]
Traceback (most recent call last):
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/_normalization.py", line 61, in safe_version
    return str(packaging.version.Version(v))
               ~~~~~~~~~~~~~~~~~~~~~~~~~^^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/_vendor/packaging/version.py", line 202, in __init__
    raise InvalidVersion(f"Invalid version: {version!r}")
packaging.version.InvalidVersion: Invalid version: "__version__.=.'1.2.2'\n"

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 14, in <module>
    requires = get_requires_for_build({})
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/build_meta.py", line 473, in get_requires_for_build_editable
    return self.get_requires_for_build_wheel(config_settings)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/build_meta.py", line 331, in get_requires_for_build_wheel
    return self._get_build_requires(config_settings, requirements=[])
           ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/build_meta.py", line 301, in _get_build_requires
    self.run_setup()
    ~~~~~~~~~~~~~~^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/build_meta.py", line 317, in run_setup
    exec(code, locals())
    ~~~~^^^^^^^^^^^^^^^^
  File "<string>", line 1, in <module>
    import sys
    
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/__init__.py", line 115, in setup
    return distutils.core.setup(**attrs)
           ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/_distutils/core.py", line 186, in setup
    return run_commands(dist)
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/_distutils/core.py", line 202, in run_commands
    dist.run_commands()
    ~~~~~~~~~~~~~~~~~^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/_distutils/dist.py", line 1002, in run_commands
    self.run_command(cmd)
    ~~~~~~~~~~~~~~~~^^^^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/dist.py", line 1102, in run_command
    super().run_command(command)
    ~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/_distutils/dist.py", line 1020, in run_command
    cmd_obj.ensure_finalized()
    ~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/_distutils/cmd.py", line 135, in ensure_finalized
    self.finalize_options()
    ~~~~~~~~~~~~~~~~~~~~~^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/command/egg_info.py", line 225, in finalize_options
    self.egg_version = self.tagged_version()
                       ~~~~~~~~~~~~~~~~~~~^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/command/egg_info.py", line 131, in tagged_version
    return _normalization.safe_version(tagged)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/_normalization.py", line 64, in safe_version
    return str(packaging.version.Version(attempt))
               ~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/home/remyroy/.cache/uv/builds-v0/.tmpWCMMp3/lib/python3.13/site-packages/setuptools/_vendor/packaging/version.py", line 202, in __init__
    raise InvalidVersion(f"Invalid version: {version!r}")
packaging.version.InvalidVersion: Invalid version: '__version__.-.-1.2.2-'

hint: This usually indicates a problem with the package or the build environment.

[remyroy]

It works now with d914a05 being included.

[remyroy]

This PR should also update our release process for this new change in docs/src/release_process.md.

[yorickdowne]

Good catch @remyroy . Added a change to release docs

[remyroy]

Line 18 of docs/src/release_process.md also need to be updated for this new VERSION value location.

[yorickdowne]

Change made, @remyroy

[remyroy]

Everything is good! I'll let you merge when you feel like this won't break your other work.