Update check-codegen.yml

Author: asmyasnikov

.github/workflows/check-codegen.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        go-version: [1.20.x, 1.21.x, 1.22.x]
+        go-version: [1.22.x]
     runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout