chore: replace Python script with bash script for libwasm version detection

[VolodymyrBg]

Description

This PR replaces the Python script get-libwasm-version.py with a minimal bash script that performs the same functionality. The Python script was overkill for such a simple operation and required installing Python dependencies, which is unnecessary.
The bash script:

1. Extracts the version of CosmWasm/wasmvm/v2 from the go.mod file
2. Optionally gets the checksum of a specific library file for that version
   Has the same command-line interface as the Python script
   Additionally, this PR:

• Updates all references to the Python script in workflow files and build scripts
• Removes the Python dependencies installation step from workflows
• Removes the python-install-deps target from Makefile
• Removes the requirements.txt file
  This change simplifies the build process and reduces dependencies.

closes: #7885

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• Targeted PR against the correct branch (see CONTRIBUTING.md).
• Linked to GitHub issue with discussion and accepted design, OR link to spec that describes this work.
• Code follows the module structure standards and Go style guide.
• Wrote unit and integration tests.
• Updated relevant documentation (docs/).
• Added relevant godoc comments.
• Provide a conventional commit message to follow the repository standards.
• Include a descriptive changelog entry when appropriate. This may be left to the discretion of the PR reviewers. (e.g. chores should be omitted from changelog)
• Re-reviewed Files changed in the GitHub PR explorer.
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[VolodymyrBg]

Important note!!
there is need to delete 2 files:
scripts/get-libwasm-version.py
requirements.txt
but I don't know how to do it
I tried but the files weren't deleted