fix: compile v1_21_R7 against 1.21.11-R0.2-SNAPSHOT instead of R0.1

Author: SpraxDev

modules/nms/betterchairs-v1_21_R7/pom.xml

@@ -13,7 +13,7 @@
     <artifactId>betterchairs-v1_21_R7</artifactId>
 
     <properties>
-        <nms.ver>1.21.11-R0.1-SNAPSHOT</nms.ver>
+        <nms.ver>1.21.11-R0.2-SNAPSHOT</nms.ver>
     </properties>
 
     <build>