Update release-build.yml

Author: mitchelsellers

.github/workflows/release-build.yml

@@ -27,7 +27,7 @@ jobs:
     - name: Install GitVersion
       uses: gittools/actions/gitversion/setup@v3.1.1
       with:
-        versionSpec: '6.x'
+        versionSpec: '6.0.5'
 
     - name: Determine Version
       id: gitversion