Bump Gerrit to 3.6.0-rc3.1

Re-release as 3.6.0-rc3.1 because of the rc3
being built with Java 17. Now the source and target version
are set in the pom.xml explicitly.

Change-Id: I7b506f767fd2c5a3c6ca8c8659e7fe45b42d0bba
diff --git a/pom.xml b/pom.xml
index 86cee17..415faed 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>com.gerritforge</groupId>
     <artifactId>global-refdb</artifactId>
-    <version>3.6.0-rc3</version>
+    <version>3.6.0-rc3.1</version>
     <packaging>jar</packaging>
 
     <name>global-refdb</name>
@@ -38,7 +38,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <gerrit.version>${project.version}</gerrit.version>
+        <gerrit.version>3.6.0-rc3</gerrit.version>
     </properties>
 
     <dependencies>
@@ -81,8 +81,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.6.1</version>
                 <configuration>
-                    <source>${java.specification.version}</source>
-                    <target>${java.specification.version}</target>
+                    <source>11</source>
+                    <target>11</target>
                 </configuration>
             </plugin>
             <plugin>