Trigger CI on pull_requests

* Use lts-22 for 9.6
* Increment latest for 9.8

.github/workflows/ci.yaml

@@ -2,6 +2,13 @@ name: Continuous Integration
 
 on:
   push:
+    branches:
+      - main
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
 
 jobs:
   test:

stack-9.6.yaml

@@ -4,8 +4,8 @@
 # license that can be found in the LICENSE file or at
 # https://developers.google.com/open-source/licenses/bsd
 
-resolver: nightly-2023-11-21
-compiler: ghc-9.6.3
+resolver: lts-22.15
+compiler: ghc-9.6.4
 
 packages:
 - .

stack-9.8.yaml

@@ -4,7 +4,7 @@
 # license that can be found in the LICENSE file or at
 # https://developers.google.com/open-source/licenses/bsd
 
-resolver: nightly-2024-03-29
+resolver: nightly-2024-04-06
 compiler: ghc-9.8.2
 
 packages: