chore(deps): update actions/cache action to v5

Author: renovate[bot]

.github/workflows/gh-pages.yml

@@ -20,7 +20,7 @@ jobs:
           version: 'latest'
 
       - name: Cache Rust Deps
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/registry