Update to Spring Data 2021.2.15

Closes gh-814

Author: jzheaux

Diff for: dependencies/build.gradle

@@ -15,7 +15,7 @@ ext.queryDslVersion = '5.0.0'
 
 dependencies {
 	api platform("org.springframework:spring-framework-bom:6.1.0-M5")
-	api platform("org.springframework.data:spring-data-bom:2021.2.14")
+	api platform("org.springframework.data:spring-data-bom:2021.2.15")
 	api platform('com.fasterxml.jackson:jackson-bom:2.15.2')
 	api platform("org.junit:junit-bom:5.10.0")
 	constraints {