build(deps): bump actions/cache from 4 to 5

Bumps [actions/cache](https://github.com/actions/cache) from 4 to 5.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4...v5)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
         with:
           python-version: "3.13"
       - name: Cache pip
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.cache/pip
           key: pip-lint-${{ runner.os }}-${{ hashFiles('ruff.toml', '.pre-commit-config.yaml') }}
@@ -73,7 +73,7 @@ jobs:
         id: repo
         run: echo "path=$(pwd)" >> $GITHUB_OUTPUT
       - name: Cache pip
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.cache/pip
           key: pip-${{ matrix.python-version }}-${{ matrix.package }}-${{ hashFiles(format('Shared/pyproject.toml', matrix.package, '/pyproject.toml')) }}
@@ -116,7 +116,7 @@ jobs:
         with:
           bun-version: "1.2.21"
       - name: Cache bun
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.bun/install/cache
           key: bun-${{ runner.os }}-${{ hashFiles('VibeGame/bun.lock') }}