chore(CI): Adjust testing matrix for Nextcloud 34 on stable34

Signed-off-by: Joas Schilling <coding@schilljs.com>

Author: nickvergessen

.github/workflows/phpunit.yml

@@ -23,7 +23,7 @@ jobs:
       fail-fast: false
       matrix:
         php-version: ['8.2', '8.3']
-        server-version: ['master']
+        server-version: ['stable34']
 
     steps:
       - name: Set app env

composer.json

@@ -16,12 +16,12 @@
 		}
 	],
 	"require-dev": {
-		"nextcloud/ocp": "dev-master",
-		"roave/security-advisories": "dev-latest",
-		"psalm/phar": "6.16.1",
-		"nextcloud/coding-standard": "^1.1",
+		"bamarni/composer-bin-plugin": "^1.9",
 		"friendsofphp/php-cs-fixer": "3.94.1",
-		"bamarni/composer-bin-plugin": "^1.9"
+		"nextcloud/coding-standard": "^1.1",
+		"nextcloud/ocp": "dev-stable34",
+		"psalm/phar": "6.16.1",
+		"roave/security-advisories": "dev-latest"
 	},
 	"scripts": {
 		"lint": "find . -name \\*.php -not -path './vendor/*' -not -path './vendor-bin/*' -print0 | xargs -0 -n1 php -l",