Hardcoding pip version for workflows

[benmalef]

Brief description

This PR tries to fix the following error with the new version of pip(24.1.1). Latest pip (24.1, released on 06/20/2024) does not install omegaconf==2.1.0 due to non-standard metadata:

DEPRECATION: omegaconf 2.1.0 has a non-standard dependency specifier PyYAML>=5.1.*. pip 24.1 will enforce this behaviour change. A possible replacement is to upgrade to a newer version of omegaconf or contact the author to suggest that they release a version with a conforming dependency specifiers. Discussion can be found at https://github.com/pypa/pip/issues/12063

Solution

In this thread is the solution.
It is proposed to update the pip version in the files.

Proposed Changes

Temporarily, I have updated files to use pip 24.0 until this is fixed. The following are modified:

• Docker files: Dockerfile-CPU, Dockerfile-CUDA11.8,Dockerfile-CUDA12.1,RCOm
• Workflow files: mlcube-test, openfl-test, python-test

Checklist

• [ ] CONTRIBUTING guide has been followed.
• [ ] PR is based on the current GaNDLF master .
• [ ] Non-breaking change (does not break existing functionality): provide as many details as possible for any breaking change.
• [ ] Function/class source code documentation added/updated (ensure typing is used to provide type hints, including and not limited to using Optional if a variable has a pre-defined value).
• [ ] Code has been blacked for style consistency and linting.
• [ ] If applicable, version information has been updated in GANDLF/version.py.
• [ ] If adding a git submodule, add to list of exceptions for black styling in pyproject.toml file.
• [ ] Usage documentation has been updated, if appropriate.
• [ ] Tests added or modified to cover the changes; if coverage is reduced, please give explanation.
• [ ] If customized dependency installation is required (i.e., a separate pip install step is needed for PR to be functional), please ensure it is reflected in all the files that control the CI, namely: python-test.yml, and all docker files [1,2,3].

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[benmalef]

Hi @sarthakpati, please review the PR.