Upgrade Immutables Annotations 2.12.0 -> 2.12.1 (#2055)

See:
- https://github.com/immutables/immutables/releases/tag/2.12.1
- immutables/immutables@2.12.0...2.12.1

Author: Picnic-DevPla-Bot

pom.xml

@@ -457,7 +457,7 @@
             <dependency>
                 <groupId>org.immutables</groupId>
                 <artifactId>value-annotations</artifactId>
-                <version>2.12.0</version>
+                <version>2.12.1</version>
             </dependency>
             <dependency>
                 <groupId>org.jooq</groupId>