fix: examples/examples-release-20/pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-NETMINIDEV-3369748
- https://snyk.io/vuln/SNYK-JAVA-COMFASTERXMLJACKSONCORE-7569538
- https://snyk.io/vuln/SNYK-JAVA-NETMINIDEV-1298655

examples/examples-release-20/pom.xml

@@ -31,7 +31,7 @@
 		<dependency>
 			<groupId>io.kubernetes</groupId>
 			<artifactId>client-java</artifactId>
-			<version>20.0.0</version>
+			<version>21.0.0</version>
 		</dependency>
 		<dependency>
 			<groupId>io.kubernetes</groupId>
@@ -91,7 +91,7 @@
 		<dependency>
 			<groupId>com.amazonaws</groupId>
 			<artifactId>aws-java-sdk-sts</artifactId>
-			<version>1.12.780</version>
+			<version>1.12.781</version>
 		</dependency>
 
 	</dependencies>