chore(deps): update actions/cache action from v4.3.0 to v5 (.github/workflows/validate_docs_build.yml)

Author: renovate[bot]

.github/workflows/gh-pages.yml

@@ -27,7 +27,7 @@ jobs:
           node-version: '24.11.1' # TODO: Renovate helper might not be needed here - needs to be fully tested
 
       - name: Cache dependencies
-        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+        uses: actions/cache@a7833574556fa59680c1b7cb190c1735db73ebf0 # v5.0.0
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}

.github/workflows/validate_docs_build.yml

@@ -21,7 +21,7 @@ jobs:
           node-version: '24.11.1' # TODO: Renovate helper might not be needed here - needs to be fully tested
 
       - name: Cache dependencies
-        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+        uses: actions/cache@a7833574556fa59680c1b7cb190c1735db73ebf0 # v5.0.0
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}