chore: Allow triggering of release workflow via webhook

Author: gethinwebster

.github/workflows/release.yml

@@ -3,6 +3,8 @@
 name: Release
 
 on:
+  repository_dispatch:
+    types: [run-release]
   push:
     branches:
       - main

.github/workflows/visual-regression.yml

@@ -7,6 +7,9 @@ on:
   push:
     branches:
       - main
+  workflow_run:
+    workflows: [Release]
+    types: [completed]
 
 env:
   VISUAL_REGRESSION_SNAPSHOT_DIRECTORY: "__image_snapshots__"
@@ -15,7 +18,7 @@ jobs:
   test:
     name: Run Tests
     runs-on: ubuntu-latest
-    if: github.event.ref != 'refs/heads/main'
+    if: (github.event.ref || github.event.workflow_run.head_branch) != 'refs/heads/main'
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
@@ -44,7 +47,7 @@ jobs:
   update:
     name: Update Snapshots
     runs-on: ubuntu-latest
-    if: github.event.ref == 'refs/heads/main'
+    if: (github.event.ref || github.event.workflow_run.head_branch) != 'refs/heads/main'
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4