[FLINK-38010][release] Add new version 2.2 and update GHA nightly build versions

Author: lsyldliu

.github/workflows/nightly-trigger.yml

@@ -31,9 +31,9 @@ jobs:
       matrix:
         branch:
           - master
+          - release-2.1
           - release-2.0
           - release-1.20
-          - release-1.19
     runs-on: ubuntu-latest
     steps:
       - name: Trigger Workflow

flink-annotations/src/main/java/org/apache/flink/FlinkVersion.java

@@ -59,7 +59,8 @@ public enum FlinkVersion {
     v1_19("1.19"),
     v1_20("1.20"),
     v2_0("2.0"),
-    v2_1("2.1");
+    v2_1("2.1"),
+    v2_2("2.2");
 
     private final String versionStr;