Copier update (python install scripts)

[ejfine]

Pull in upstream changes

[Copilot]

Pull Request Overview

This PR pulls in upstream dependency and tooling updates, migrates installation scripts from shell/PowerShell to Python, and bumps various CI and devcontainer configurations.

• Bump numerous package and action versions in extensions/context.py, workflows, and configs
• Replace shell/PowerShell install scripts with unified Python scripts (.devcontainer/manual-setup-deps.py, .devcontainer/install-ci-tooling.py)
• Update GitHub workflows and devcontainer settings to match new tool versions and improve step logic

Reviewed Changes

Copilot reviewed 44 out of 44 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
extensions/context.py	Updated many dependency version pins
_typos.toml	Added exclude for VCR.py cassette YAML files
README.md	Changed install command to use Python installer
.pre-commit-config.yaml	Bumped hook revisions and added vendor_files excludes
.github/workflows/pre-commit.yaml	Refined checkout steps and bumped cache action
.github/workflows/get-values.yaml	Added PR number extraction steps
.github/workflows/ci.yaml	Switched to install_deps action and updated cache
.github/reusable_workflows/build-docker-image.yaml	Bumped AWS and docker actions versions
.github/actions/install_deps/action.yml	Updated inputs schema and installation logic
.devcontainer/manual-setup-deps.py	New Python-based dependency setup script
.devcontainer/install-ci-tooling.py	New Python-based CI tooling installer
.devcontainer/devcontainer.json	Bumped devcontainer feature versions and extensions
.devcontainer/Dockerfile	Upgraded base image tag with platform flag
.copier-answers.yml	Updated _commit to match new template version

Comments suppressed due to low confidence (2)

extensions/context.py:27

• Renaming the key from pulumi_github to pulumi_github_version changes the template API; ensure downstream code is updated to read the new key or consider deprecating the old key for backward compatibility.

context["pulumi_github_version"] = "6.7.2"

.github/workflows/get-values.yaml:47

• This parameter expansion syntax (${VAR:COND?A:B}) is not valid in POSIX/Bash. Bash does not support inline ternary operators in slice offsets. Consider using an explicit conditional (e.g. an if statement) to compute the slice index.

short_number=${full_number:${#full_number}<2?0:-2} # only use the last two digits so that the stack name is no more than 7 characters and doesn't get too long. Based on https://stackoverflow.com/questions/19858600/accessing-last-x-characters-of-a-string-in-bash

[Copilot]

The new install_deps action requires a python-version input to install the correct Python version; the pipeline no longer passes python-version, which may lead to unexpected defaults. Add python-version: ${{ matrix.python-version }} under with:.

[Copilot]

The 'Checkout code not during push' step is missing a with: ref: ${{ github.ref_name }} block, so it may default to the wrong ref. Add the same with stanza as the push checkout step.

Suggested change

	uses: actions/checkout@v4.2.2
	uses: actions/checkout@v4.2.2
	with:
	ref: ${{ github.ref_name }}