Upgrade shivammathur/setup-php (#1095)

Author: GrahamCampbell

.github/workflows/branch_alias.yml

@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - name: Set up PHP
-        uses: shivammathur/setup-php@2.7.0
+        uses: shivammathur/setup-php@v2
         with:
           php-version: 8.0
           coverage: none

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Set up PHP
-        uses: shivammathur/setup-php@2.7.0
+        uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
           coverage: none