ci: remove usage of semantic pr app for action (aws#3515)

Removes usage of the [Semantic Pull Requests App](https://github.com/zeke/semantic-pull-requests)
in favor of a [github
action](https://github.com/amannn/action-semantic-pull-request) since
the app hasn't been functioning for some time.

.github/workflows/pull-request-lint.yml

@@ -0,0 +1,34 @@
+name: pull-request-lint
+on:
+  pull_request_target:
+    types:
+      - labeled
+      - opened
+      - synchronize
+      - reopened
+      - ready_for_review
+      - edited
+jobs:
+  validate:
+    name: Validate PR Title
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - uses: amannn/action-semantic-pull-request@v4
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          types: |-
+            feat
+            fix
+            chore
+            docs
+            style
+            refactor
+            perf
+            test
+            build
+            ci
+            revert
+          requireScope: false

.mergify/config.yml

@@ -51,7 +51,7 @@ pull_request_rules:
       - '#approved-reviews-by>=1'
       - '#review-requested=0'
       - '#changes-requested-reviews-by=0'
-      - status-success=Semantic Pull Request
+      - status-success=Validate PR Title
       # Docker image validation
       - status-success~=^jsii/superchain
       # One test for each OS
@@ -102,7 +102,7 @@ pull_request_rules:
       - '#approved-reviews-by>=1'
       - '#review-requested=0'
       - '#changes-requested-reviews-by=0'
-      - status-success=Semantic Pull Request
+      - status-success=Validate PR Title
       # Docker image validation
       - status-success~=^jsii/superchain
       # One test for each OS
@@ -153,7 +153,7 @@ pull_request_rules:
       - '#approved-reviews-by>=1'
       - '#review-requested=0'
       - '#changes-requested-reviews-by=0'
-      - status-success=Semantic Pull Request
+      - status-success=Validate PR Title
       # Docker image validation
       - status-success~=^jsii/superchain
       # One test for each OS
@@ -210,4 +210,4 @@ pull_request_rules:
 
           [Conventional Commits]: https://www.conventionalcommits.org
     conditions:
-      - status-failure=Semantic Pull Request
+      - status-failure=Validate PR Title