Add JMX metrics gatherer version 1.47.0-alpha (#41110)

Add JMX metrics gatherer version `1.47.0-alpha`.

cc @open-telemetry/java-contrib-approvers

Author: opentelemetrybot

receiver/jmxreceiver/supported_jars.go

@@ -31,6 +31,10 @@ func oldFormatProperties(c *Config, j supportedJar) error {
 // If you change this variable name, please open an issue in opentelemetry-java-contrib
 // so that repository's release automation can be updated
 var jmxMetricsGathererVersions = map[string]supportedJar{
+	"0344be738295602718934accd0557496b10464582681e69a251dc3b8d3f69b69": {
+		version: "1.47.0-alpha",
+		jar:     "JMX metrics gatherer",
+	},
 	"291c6071e6702ae8d81b712582f8e2f312e6b35633b603eada46e3984e5cd020": {
 		version: "1.46.0-alpha",
 		jar:     "JMX metrics gatherer",