Add 1.1.0 Javadocs

Author: dsyer

spring-grpc-docs/src/main/antora/antora-playbook.yml

@@ -14,7 +14,7 @@ git:
 content:
   sources:
     - url: ./../../../..
-      branches: [main, '1.+({0..9}).x', '1.0.3']
+      branches: [main, '1.+({0..9}).x', '1.0.3', '1.1.0-RC1']
       start_path: spring-grpc-docs/src/main/antora
       worktrees: true
 asciidoc: