MNT Update GHA dependencies (#45)

action.yml

@@ -6,7 +6,7 @@ runs:
   steps:
 
     - name: Install PHP
-      uses: shivammathur/setup-php@1a18b2267f80291a81ca1d33e7c851fe09e7dfc4 # v2.22.0
+      uses: shivammathur/setup-php@c541c155eee45413f5b09a52248675b1a2575231 # v2.31.1
       with:
         php-version: '8.1'
         tools: composer:v2
@@ -15,7 +15,7 @@ runs:
     # need to download requirements for the first time, after that it will be plenty quick
     # https://docs.github.com/en/actions/advanced-guides/caching-dependencies-to-speed-up-workflows
     - name: Enable shared composer cache
-      uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8 # @v3.3.1
+      uses: actions/cache@3624ceb22c1c5a301c8db4169662070a689d9ea8 # @v4.1.1
       with:
         path: ~/.cache/composer
         key: shared-composer-cache
@@ -188,7 +188,7 @@ runs:
     # actions/checkout with fetch-depth: 0 will fetch ALL git history for the repository
     # this is required for a merge-up to ensure that nothing is missed
     - name: Checkout code
-      uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
+      uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
       with:
         fetch-depth: 0