Updated .github/workflows/update-docs.yml to use latest version of actions/cache, to avoid deprecation

Author: ricky-undeadcoders

.github/workflows/update-docs.yml

@@ -67,7 +67,7 @@ jobs:
         with:
           python-version: 3.x
       - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
-      - uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9 # v4.0.2
+      - uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
         with:
           key: mkdocs-material-${{ env.cache_id }}
           path: .cache