ci: update kitty tests to latest 0.40

closes #311

Author: mikesmithgh

.github/workflows/tests.yml

@@ -36,7 +36,7 @@ jobs:
           - 'stable'  # v0.10.+
           - 'nightly' 
         kitty_version: 
-          - 'stable'  # 0.39.+
+          - 'stable'  # 0.40.+
           - 'nightly'
         # update __branch-protection-rules.json and run __update_branch_protection_rules.sh when modified
         # test all version of nvim released as of v0.9.0
@@ -62,6 +62,8 @@ jobs:
             kitty_version: '0.37.0'
           - nvim_version: 'stable'
             kitty_version: '0.38.1'
+          - nvim_version: 'stable'
+            kitty_version: '0.39.1'
       fail-fast: false
     runs-on: ubuntu-24.04
     steps:

scripts/internal/__branch-protection-rules.json

@@ -17,7 +17,8 @@
       "plenary (stable, 0.35.2)",
       "plenary (stable, 0.36.4)",
       "plenary (stable, 0.37.0)",
-      "plenary (stable, 0.38.1)"
+      "plenary (stable, 0.38.1)",
+      "plenary (stable, 0.39.1)"
     ]
   },
   "enforce_admins": false,