chore(deps): update actions/cache action from v6.0.0 to v6.1.0 (.github/workflows/validate_docs_build.yml) (#15120)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/gh-pages.yml

@@ -27,7 +27,7 @@ jobs:
           node-version: '24.18.0' # TODO: Renovate helper might not be needed here - needs to be fully tested
 
       - name: Cache dependencies
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}

.github/workflows/validate_docs_build.yml

@@ -22,7 +22,7 @@ jobs:
           node-version: '24.18.0' # TODO: Renovate helper might not be needed here - needs to be fully tested
 
       - name: Cache dependencies
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}