Bump cmb69/setup-php-sdk to 0.7 (#1413)

This pulls cmb69/setup-php-sdk@2648729, which migrates deprecated set-output commands to use $GITHUB_OUTPUT

Author: jmikola

.github/workflows/tests.yml

@@ -109,7 +109,7 @@ jobs:
 
       - name: Setup PHP SDK
         id: setup-php
-        uses: cmb69/setup-php-sdk@v0.6
+        uses: cmb69/setup-php-sdk@v0.7
         with:
           version: ${{ matrix.php }}
           arch: ${{ matrix.arch }}