[maven-release-plugin] prepare release spine-libgdx-3.6.52.1

spine-libgdx/spine-libgdx/pom.xml

@@ -10,7 +10,7 @@
 	<groupId>com.esotericsoftware.spine</groupId>
 	<artifactId>spine-libgdx</artifactId>
 	<packaging>jar</packaging>
-	<version>3.6.51.2-SNAPSHOT</version>
+	<version>3.6.52.1</version>
 
 	<name>spine-libgdx</name>
 	<description>Spine Runtime for libGDX</description>
@@ -38,7 +38,7 @@
 		<connection>scm:git:https://github.com/EsotericSoftware/spine-runtimes.git</connection>
 		<developerConnection>scm:git:https://github.com/EsotericSoftware/spine-runtimes.git</developerConnection>
 		<url>https://github.com/EsotericSoftware/spine-runtimes/</url>
-	  <tag>HEAD</tag>
+	  <tag>spine-libgdx-3.6.52.1</tag>
   </scm>
 
 	<repositories>