Fix `main` pipeline

Summary

Currently the pipeline fails.

Details

abseil/20211102.0: Downloaded recipe revision 0
ERROR: abseil/20211102.0: Cannot load recipe.
Error loading conanfile at '/root/.conan/data/abseil/20211102.0/_/_/export/conanfile.py': Unable to load conanfile in /root/.conan/data/abseil/20211102.0/_/_/export/conanfile.py
  File "/usr/lib/python3.9/imp.py", line 171, in load_source
    module = _load(spec)
  File "<frozen importlib._bootstrap>", line 711, in _load
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 790, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/root/.conan/data/abseil/20211102.0/_/_/export/conanfile.py", line 3, in <module>
    from conan.tools.apple import is_apple_os
ImportError: cannot import name 'is_apple_os' from 'conan.tools.apple' (/usr/local/lib/python3.9/dist-packages/conan/tools/apple/__init__.py)
The command '/bin/sh -c conan create .. --build=missing -s "compiler.libcxx=libstdc++11"' returned a non-zero code: 1

Specifications

• Version: Which version of this software?
• Platform: Which operating system, which other relevant software versions?

Possible fixes

Do you have ideas how the issue can be resolved?