Restrict IO Workflow to PRs With PNGs (#1052)

.github/workflows/build-and-test.yml

@@ -4,14 +4,11 @@ name: Build and test
 on:
   pull_request:
     branches: [ master, main ]
+
   push:
     branches: [ master, main ]
 
 jobs:
-  optimize-images:
-    uses: GTNewHorizons/GTNH-Actions-Workflows/.github/workflows/optimize-images.yml@master
-    secrets: inherit
-    
   build-and-test:
     uses: GTNewHorizons/GTNH-Actions-Workflows/.github/workflows/build-and-test.yml@master
     secrets: inherit

.github/workflows/optimize-images.yml

@@ -0,0 +1,17 @@
+name: Optimize images
+
+on:
+  pull_request:
+    branches: [ master, main, release/** ]
+    paths:
+      - "**/*.png"
+
+  push:
+    branches: [ master, main, release/** ]
+    paths:
+      - "**/*.png"
+
+jobs:
+  optimize-images:
+    uses: GTNewHorizons/GTNH-Actions-Workflows/.github/workflows/optimize-images.yml@master
+    secrets: inherit