Prep main for 9.1 (#4555)

* Prep for Release 9.1

* Update Patch Version

* Update Patch version

* Update Patch version

.github/workflows/lock-versions.yml

@@ -6,7 +6,7 @@ on:
           description: 'List of branches to lock versions (ordered, comma separated)'
           required: true
           # 7.17 was intentionally skipped because it was added late and was bug fix only
-          default: '8.13,8.14,8.15,8.16,8.17,8.18'
+          default: '8.14,8.15,8.16,8.17,8.18,9.0'
 
 jobs:
   pr:

.github/workflows/pythonpackage.yml

@@ -2,7 +2,7 @@ name: Unit Tests
 
 on:
   push:
-    branches: [ "main", "7.*", "8.*" ]
+    branches: [ "main", "7.*", "8.*", "9.*" ]
   pull_request:
     branches: [ "*" ]