chore: clean up bazel cache pruning due to bazel 7.5

Summary

New bazel version 7.5.0 (introduced from MR!99) allows usage of newly introduced features such as disk cache pruning, limiting used ram ressources ... This MR cleans up workaround in the CI scripts to limit the disk cache to 50GB via a shell script. Now we will use --experimental_disk_cache_gc_max_size=50G.

Screenshots (if applicable)

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Checklist Before Merging

1. Third-Party Library and Version Updates

• All third-party libraries have been updated (e.g., road-logic-suite, gt-gen-core, osc1-engine, mantle-API).
• gt-gen-core version number has been updated in Core/update_version.patch (if gt-gen-core is updated).
• Notice.md has been updated with relevant changes.
• The version number in Simulator/LibSimCore/version.bzl has been updated accordingly.

2. Documentation Updates

• User-facing documentation (user guides, tutorials, etc.) has been updated to reflect the changes.
• The feature list in Documentation/03_scenario_description/supported_osc_features.md has been updated.

3. Tests and CI Checks

• Unit tests / integration tests are added

• All CI checks are passing

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Related Issues / Tickets