install phpunit

Author: jrushlow

.github/workflows/ci-static-analysis.yaml

@@ -89,5 +89,8 @@ jobs:
                 with:
                     composer-options: "--no-scripts --working-dir=tools/phpstan/includes"
 
+            -   name: Install PHPUnit
+                run: "vendor/bin/simple-phpunit --version"
+
             -   name: Run PHPStan
                 run: "tools/phpstan/vendor/bin/phpstan --memory-limit=1G"