fixed syntax error

Author: frankmorgner

.github/workflows/coverity.yml

@@ -13,7 +13,7 @@ jobs:
   build:
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@@v6
+    - uses: actions/checkout@v6
     - run: .github/build.sh coverity
     - uses: vapier/coverity-scan-action@2dd9b03b1987669de7a6db4203ba44b76a636ce4 # v0.0.1
       with: