tools: add update script for googletest

GoogleTest follows the Abseil Live at Head philosophy, and rarely
creates tags or GitHub releases, so instead, follow Google's
recommendation and update to the upstream HEAD every once in a while.

The tricky bit is properly updating googletest.gyp, and this script
might fail doing so in the future.

Refs: nodejs/security-wg#828

.github/workflows/tools.yml

@@ -23,6 +23,7 @@ on:
           - corepack
           - doc
           - eslint
+          - googletest
           - libuv
           - lint-md-dependencies
           - llhttp
@@ -235,6 +236,14 @@ jobs:
               cat temp-output
               tail -n1 temp-output | grep "NEW_VERSION=" >> "$GITHUB_ENV" || true
               rm temp-output
+          - id: googletest
+            subsystem: deps
+            label: dependencies, test
+            run: |
+              ./tools/dep_updaters/update-googletest.sh > temp-output
+              cat temp-output
+              tail -n1 temp-output | grep "NEW_VERSION=" >> "$GITHUB_ENV" || true
+              rm temp-output
     steps:
       - uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c  # v3.3.0
         if: github.event_name == 'schedule' || inputs.id == 'all' || inputs.id == matrix.id