NIFI-8721 Upgraded Spring Boot to 2.5.1 for Registry

- Upgraded spring-jdbc to 5.3.8 for Registry

Signed-off-by: Pierre Villard <pierre.villard.fr@gmail.com>

This closes #5172.
diff --git a/nifi-registry/nifi-registry-core/nifi-registry-revision/nifi-registry-revision-spring-jdbc/pom.xml b/nifi-registry/nifi-registry-core/nifi-registry-revision/nifi-registry-revision-spring-jdbc/pom.xml
index 486bc9c..a1be7e5 100644
--- a/nifi-registry/nifi-registry-core/nifi-registry-revision/nifi-registry-revision-spring-jdbc/pom.xml
+++ b/nifi-registry/nifi-registry-core/nifi-registry-revision/nifi-registry-revision-spring-jdbc/pom.xml
@@ -32,7 +32,7 @@
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-jdbc</artifactId>
-            <version>5.2.5.RELEASE</version>
+            <version>${spring.version}</version>
         </dependency>
         <!-- Test Deps -->
         <dependency>
diff --git a/nifi-registry/pom.xml b/nifi-registry/pom.xml
index d218e1a..3f8f6d9 100644
--- a/nifi-registry/pom.xml
+++ b/nifi-registry/pom.xml
@@ -91,7 +91,8 @@
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <inceptionYear>2017</inceptionYear>
         <jax.rs.api.version>2.1</jax.rs.api.version>
-        <spring.boot.version>2.2.6.RELEASE</spring.boot.version>
+        <spring.boot.version>2.5.1</spring.boot.version>
+        <spring.version>5.3.8</spring.version>
         <spring.security.version>5.4.6</spring.security.version>
         <flyway.version>6.5.7</flyway.version>
         <flyway.tests.version>6.4.0</flyway.tests.version>