Add TLSv1.3 in jdk.tls.client.protocols systemProp in gradle.properties (opensearch-project#16237)

* Remove force to TLSv1.2 in gradle.properties

Signed-off-by: Craig Perkins <cwperx@amazon.com>

* Add TLSv1.3

Signed-off-by: Craig Perkins <cwperx@amazon.com>

---------

Signed-off-by: Craig Perkins <cwperx@amazon.com>

Author: cwperks

gradle.properties

@@ -31,9 +31,7 @@ systemProp.org.gradle.dependency.duplicate.project.detection=false
 # Enforce the build to fail on deprecated gradle api usage
 systemProp.org.gradle.warning.mode=fail
 
-# forcing to use TLS1.2 to avoid failure in vault
-# see https://github.com/hashicorp/vault/issues/8750#issuecomment-631236121
-systemProp.jdk.tls.client.protocols=TLSv1.2
+systemProp.jdk.tls.client.protocols=TLSv1.2,TLSv1.3
 
 # jvm args for faster test execution by default
 systemProp.tests.jvm.argline=-XX:TieredStopAtLevel=1 -XX:ReservedCodeCacheSize=64m