Update formula to version (#582)

* Update the release build yaml with the latest versions

* Update .vsts-ci/releasebuild.yml

Co-authored-by: TravisEz13 <TravisEz13@users.noreply.github.com>
Co-authored-by: Travis Plunk <travis.plunk@microsoft.com>

Author: github-actions[bot]

.vsts-ci/releasebuild.yml

@@ -4,9 +4,9 @@ parameters:
   - name: 'previewReleaseTag'
     default: v7.2.0-preview.10
   - name: 'ltsReleaseTag'
-    default: v7.0.7
+    default: v7.0.8
   - name: 'stableReleaseTag'
-    default: v7.1.4
+    default: v7.1.5
 
 resources:
 - repo: self