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](https://github.com/actions/cache/compare/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>

.github/workflows/code-quality-and-tests.yml

@@ -34,7 +34,7 @@ jobs:
     # Step 4: Cache dependencies to speed up subsequent runs
     - name: Load cached venv
       id: cached-poetry-dependencies
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: .venv
         key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}

.github/workflows/lint.yml

@@ -14,7 +14,7 @@ jobs:
           python-version: '3.10'
 
       - name: Cache pip dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ hashFiles('**/pyproject.toml') }}

.github/workflows/test-main-features.yml

@@ -32,7 +32,7 @@ jobs:
         python-version: "3.10"
 
     - name: Cache pip dependencies
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}