fix build (#1652)

because error prone requires jdk 21

---------

Signed-off-by: Gregor Zeitlinger <[email protected]>

Author: zeitlinger

.github/workflows/release.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Set Up JDK
         uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # v5
         with:
-          java-version: 17
+          java-version: 21
           distribution: temurin
 
       - name: Build with Maven
@@ -39,7 +39,7 @@ jobs:
         uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # v5
         with:
           distribution: "temurin"
-          java-version: "17"
+          java-version: "21"
           server-id: ossrh
           server-username: MAVEN_USERNAME
           server-password: MAVEN_CENTRAL_TOKEN

prometheus-metrics-exporter-servlet-jakarta/pom.xml

@@ -19,7 +19,7 @@
 
   <properties>
     <automatic.module.name>io.prometheus.metrics.exporter.servlet.jakarta</automatic.module.name>
-    <java.version>25</java.version>
+    <java.version>17</java.version>
   </properties>
 
   <dependencies>