New Firefox releases are provided in tar.xz instead of tar.bz2

[GJFR]

While BugHog is used to downloading Firefox releases in tar.bz2 format, Firefox releases starting from v135 seem to be provided in tar.xz.
See:

• https://ftp.mozilla.org/pub/firefox/releases/134.0/linux-x86_64/en-US/
• https://ftp.mozilla.org/pub/firefox/releases/135.0/linux-x86_64/en-US/

BugHog crashes when attempting to download v135 releases and later.

Crash log:

[17-03-2025 16:06:56] [DEBUG] bci: Downloading binary for VersionState(version: 136, rev: 856816) from 'https://ftp.mozilla.org/pub/firefox/releases/136.0/linux-x86_64/en-US/firefox-136.0.tar.bz2'
[17-03-2025 16:06:58] [CRITICAL] bci.worker: An exception occurred during evaluation
Traceback (most recent call last):
  File "/usr/local/lib/python3.13/tarfile.py", line 1961, in bz2open
    t = cls.taropen(name, mode, fileobj, **kwargs)
  File "/usr/local/lib/python3.13/tarfile.py", line 1910, in taropen
    return cls(name, mode, fileobj, **kwargs)
  File "/usr/local/lib/python3.13/tarfile.py", line 1768, in __init__
    self.firstmember = self.next()
                       ~~~~~~~~~^^
  File "/usr/local/lib/python3.13/tarfile.py", line 2703, in next
    raise e
  File "/usr/local/lib/python3.13/tarfile.py", line 2676, in next
    tarinfo = self.tarinfo.fromtarfile(self)
  File "/usr/local/lib/python3.13/tarfile.py", line 1318, in fromtarfile
    buf = tarfile.fileobj.read(BLOCKSIZE)
  File "/usr/local/lib/python3.13/bz2.py", line 172, in read
    return self._buffer.read(size)
           ~~~~~~~~~~~~~~~~~^^^^^^
  File "/usr/local/lib/python3.13/_compression.py", line 68, in readinto
    data = self.read(len(byte_view))
  File "/usr/local/lib/python3.13/_compression.py", line 103, in read
    data = self._decompressor.decompress(rawblock, size)
OSError: Invalid data stream

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/app/bci/worker.py", line 26, in run
    evaluation_framework.evaluate(params, is_worker=True)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/bci/evaluations/evaluation_framework.py", line 32, in evaluate
    browser.pre_evaluation_setup()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/app/bci/browser/configuration/browser.py", line 59, in pre_evaluation_setup
    self.__fetch_binary()
    ~~~~~~~~~~~~~~~~~~~^^
  File "/app/bci/browser/configuration/browser.py", line 78, in __fetch_binary
    self.binary.fetch_binary()
    ~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/app/bci/browser/binary/binary.py", line 85, in fetch_binary
    self.download_binary()
    ~~~~~~~~~~~~~~~~~~~~^^
  File "/app/bci/browser/binary/vendors/firefox.py", line 54, in download_binary
    with tarfile.open(tar_file_path, "r:bz2") as tar_ref:
         ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/tarfile.py", line 1878, in open
    return func(name, filemode, fileobj, **kwargs)
  File "/usr/local/lib/python3.13/tarfile.py", line 1965, in bz2open
    raise ReadError("not a bzip2 file") from e
tarfile.ReadError: not a bzip2 file

[minhaj3]

Hey, I made the required changes to the code according to the issue. Please review the PR. This is one of my first few PRs, please let me know if I made any mistake.