Bump Java to 21

Change-Id: I6f3fbeae4db65b23d1012cfdf583e2449bf51bfe
diff --git a/pom.xml b/pom.xml
index 97e6805..ef09470 100644
--- a/pom.xml
+++ b/pom.xml
@@ -161,7 +161,7 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.11.0</version>
                 <configuration>
-                    <release>17</release>
+                    <release>21</release>
                     <showDeprecation>true</showDeprecation>
                     <annotationProcessorPaths>
                         <path>