Merge pull request #1051 from ydb-platform/mockgen-version

fix mockgen version in CI => check-codegen

Author: asmyasnikov

.github/workflows/check-codegen.yml

@@ -32,7 +32,7 @@ jobs:
     - name: Build
       run: |
         go install ./internal/cmd/gtrace
-        go install go.uber.org/mock/mockgen@892b665398ecece7c7a900d2a2f2fa3dac07e4c4        
+        go install go.uber.org/mock/mockgen@v0.4.0
 
     - name: Clean and re-generate *_gtrace.go files
       run: |