chore(deps): bump actions/cache from 4 to 5 (#1485)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/docs.yml

@@ -24,7 +24,7 @@ jobs:
           python-version: "3.13"
           cache: 'poetry'
       - name: Set up cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ./source
           key: 'sphinx-source-cache'