Upgrading spring boot to 2.4.3

Upgrading spring framework to 5.3.4

Author: Albertoimpl

gradle.properties

@@ -11,7 +11,7 @@ commonsTextVersion = 1.8
 immutablesVersion = 2.8.8
 openServiceBrokerVersion = 3.3.0
 pmdVersion = 6.29.0
-springBootVersion = 2.4.2
+springBootVersion = 2.4.3
 springCredhubVersion = 2.1.1.RELEASE
-springFrameworkVersion = 5.3.3
+springFrameworkVersion = 5.3.4
 wiremockVersion = 2.27.2