Update release workflow

Author: mtodor

.github/workflows/go.yml

@@ -38,7 +38,9 @@ jobs:
       uses: actions/upload-artifact@v3
       with:
         name: junit2jira
-        path: junit2jira
+        path: |
+          junit2jira
+          flakechecker
 
   release:
     if: startsWith(github.ref, 'refs/tags/')
@@ -55,3 +57,4 @@ jobs:
         with:
           files: |
             junit2jira
+            flakechecker