Updating lint-php.yml workflow from template

Signed-off-by: Nextcloud bot <bot@nextcloud.com>

.github/workflows/lint-php.yml

@@ -13,12 +13,19 @@ on:
       - master
       - stable*
 
+permissions:
+  contents: read
+
+concurrency: 
+  group: lint-php-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   php-lint:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: ["7.4", "8.0"]
+        php-versions: ["7.4", "8.0", "8.1"]
 
     name: php-lint
 
@@ -36,6 +43,8 @@ jobs:
         run: composer run lint
 
   summary:
+    permissions:
+      contents: none
     runs-on: ubuntu-latest
     needs: php-lint