Correct exclusion syntax

Author: radar

Diff for: .github/workflows/build.yml

@@ -18,9 +18,9 @@ jobs:
         rails: ["edge", "~> 7.2.0", "~> 7.1.0", "~> 7.0.0", "~> 6.1.0"]
         ruby: ["3.3","3.2", "3.1", "3.0", "2.7"]
         exclude:
-          - rails: "7.2.0"
+          - rails: "~> 7.2.0"
             ruby: "3.0"
-          - rails: "7.2.0"
+          - rails: "~> 7.2.0"
             ruby: "2.7"
           - rails: "edge"
             ruby: "3.0"