Update GitVersion version for builds

Author: pdeffendol

.github/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Install GitVersion
         uses: gittools/actions/gitversion/setup@v4
         with:
-          versionSpec: "5.x"
+          versionSpec: "6.x"
 
       - name: Determine Version
         uses: gittools/actions/gitversion/execute@v4