[maven-release-plugin] prepare release 1.2.1

Author: quarkus-release-automation[bot]

pom.xml

@@ -3,7 +3,7 @@
     <groupId>io.quarkus.develocity</groupId>
     <artifactId>quarkus-project-develocity-extension</artifactId>
     <packaging>jar</packaging>
-    <version>1.2.1-SNAPSHOT</version>
+    <version>1.2.1</version>
     <name>Quarkus project's Develocity extension</name>
     <description>A Maven extension to configure the Develocity build cache for the Quarkus project</description>
     <url>https://github.com/quarkusio/quarkus-project-develocity-extension</url>
@@ -118,7 +118,7 @@
         <url>https://github.com/quarkusio/quarkus-project-develocity-extension</url>
         <connection>scm:git:git@github.com:quarkusio/quarkus-project-develocity-extension.git</connection>
         <developerConnection>scm:git:git@github.com:quarkusio/quarkus-project-develocity-extension.git</developerConnection>
-      <tag>HEAD</tag>
+      <tag>1.2.1</tag>
   </scm>
 
     <issueManagement>