Vbump post release branch split 5.4 (#2439)

Author: erpett

azure-pipelines/build-and-release.yml

@@ -7,7 +7,7 @@ variables:
   value: '5'
   # Minor version number for the release (should be incremented post a stable release)
 - name: Minor
-  value: '3'
+  value: '4'
   # Patch version number for the release (should be incremented in release branch once one is created)
 - name: Patch
   value: '0'