CI: upload cache not working missing gitpython module

[NeroBurner]

CI job on master branch still fails after installing requests in #819

Link to one failing job: https://github.com/cpp-pm/hunter/actions/runs/17770534000/job/50505168085

-- [hunter] Cache saved: /home/runner/work/hunter/hunter/_Base/Cache/raw/a9752a4bbed14048780f84d7d6a8b4c0ea877dc8.tar.bz2
Import failed with error: No module named 'git'
Possible fixes:
 * Install gitpython module: 'pip install gitpython'
 * Set environment variable HUNTER_GIT_EXECUTABLE

[hunter ** INTERNAL **] Upload script failed
[hunter ** INTERNAL **] [Directory:/home/runner/work/hunter/hunter/cmake/projects/Jpeg]

------------------------------ ERROR -----------------------------
    https://hunter.readthedocs.io/en/latest/reference/errors/error.internal.html
------------------------------------------------------------------

CMake Error at /home/runner/work/hunter/hunter/cmake/modules/hunter_error_page.cmake:12 (message):
Call Stack (most recent call first):
  /home/runner/work/hunter/hunter/cmake/modules/hunter_internal_error.cmake:13 (hunter_error_page)
  /home/runner/work/hunter/hunter/cmake/modules/hunter_upload_cache.cmake:117 (hunter_internal_error)
  /home/runner/work/hunter/hunter/cmake/modules/hunter_download.cmake:666 (hunter_upload_cache)
  /home/runner/work/hunter/hunter/cmake/projects/Jpeg/hunter.cmake:102 (hunter_download)
  /home/runner/work/hunter/hunter/cmake/modules/hunter_add_package.cmake:62 (include)
  CMakeLists.txt:13 (hunter_add_package)


-- Configuring incomplete, errors occurred!
branch name is 'master' and GITHUB_USER_PASSWORD is set, uploading
Testing in: /home/runner/work/hunter/hunter/_testing
Execute command: [
  cmake
  -S
  /home/runner/work/hunter/hunter/examples/Jpeg
  -B
  /home/runner/work/hunter/hunter/_testing/build
  -DHUNTER_SUPPRESS_LIST_OF_FILES=ON
Traceback (most recent call last):
  File "/home/runner/work/hunter/hunter/.github/workflows/ci/build.py", line 304, in <module>
    run()
  File "/home/runner/work/hunter/hunter/.github/workflows/ci/build.py", line 231, in run
    subprocess.check_call(args)
  File "/opt/hostedtoolcache/Python/3.12.11/x64/lib/python3.12/subprocess.py", line 413, in check_call
  -DHUNTER_CONFIGURATION_TYPES=Release
  -DCMAKE_BUILD_TYPE=Release
  -DCMAKE_TOOLCHAIN_FILE=/home/runner/work/hunter/hunter/toolchains/gcc-14-cxx17-fpic.cmake
  -DHUNTER_RUN_UPLOAD=ON
  -DHUNTER_PASSWORDS_PATH=/home/runner/work/hunter/hunter/maintenance/upload-password-template.cmake
]
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['cmake', '-S', '/home/runner/work/hunter/hunter/examples/Jpeg', '-B', '/home/runner/work/hunter/hunter/_testing/build', '-DHUNTER_SUPPRESS_LIST_OF_FILES=ON', '-DHUNTER_CONFIGURATION_TYPES=Release', '-DCMAKE_BUILD_TYPE=Release', '-DCMAKE_TOOLCHAIN_FILE=/home/runner/work/hunter/hunter/toolchains/gcc-14-cxx17-fpic.cmake', '-DHUNTER_RUN_UPLOAD=ON', '-DHUNTER_PASSWORDS_PATH=/home/runner/work/hunter/hunter/maintenance/upload-password-template.cmake']' returned non-zero exit status 1.