Update Flyway to 8.5.13 (#5532)

* This was missed on the Spring Boot 2.7.17 update.
* Also updates snippet in README.md so users know how to build.

See #5522

README.md

@@ -72,7 +72,7 @@ stream or task and managing its lifecycle.
 
 Clone the repo and type 
 
-    $ ./mvnw clean install 
+    $ ./mvnw -s settings.xml clean install 
 
 Looking for more information? Follow this [link](https://github.com/spring-cloud/spring-cloud-dataflow/blob/master/spring-cloud-dataflow-docs/src/main/asciidoc/appendix-building.adoc).
 

spring-cloud-dataflow-common/spring-cloud-dataflow-common-flyway/pom.xml

@@ -14,8 +14,8 @@
 	</parent>
 
 	<properties>
-		<flyway.version>8.5.11
-		</flyway.version> <!-- have to repeat this here in order for filtering in src/main/resources/ -->
+		<!-- have to repeat this here in order for filtering in src/main/resources/ -->
+		<flyway.version>8.5.13</flyway.version>
 	</properties>
 
 	<dependencies>