Commit 6f61244a03e for php.net

commit 6f61244a03e5a1b0de70181de627296e28287eeb
Author: Tim Düsterhus <tim@tideways-gmbh.com>
Date:   Wed Dec 17 14:00:56 2025 +0100

    Update GitHub Action workflows to `actions/cache@v5`

    Keep this up to date in all nonbranches, because the node.js runtime for older
    versions might get deprecated in the future and fixing this for all branches at
    once is easier.

    see 2650248a927224aa5b76130d406a691ad774fd38

diff --git a/.github/workflows/root.yml b/.github/workflows/root.yml
index 68e43772d89..55bfe2ebeb9 100644
--- a/.github/workflows/root.yml
+++ b/.github/workflows/root.yml
@@ -20,7 +20,7 @@ jobs:
           # the correct commit hashes.
           fetch-depth: 0
       - name: Grab the commit mapping
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: branch-commit-cache.json
           # The cache key needs to change every time for the