fix: update i18n action to run only when .strings file updated

.github/workflows/check.yaml

@@ -1,12 +0,0 @@
-name: Tests and checks
-
-on: [push, pull_request]
-
-jobs:
-  i18n:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-      - run: python3 Kit/scripts/i18n.py

.github/workflows/i18n.yaml

@@ -0,0 +1,20 @@
+name: i18n check
+
+on:
+  push:
+    paths:
+      - '.github/workflows/i18n.yaml'
+      - '**/*.strings'
+  pull_request:
+    paths:
+      - '.github/workflows/i18n.yaml'
+      - '**/*.strings'
+
+jobs:
+  i18n:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+      - run: python3 Kit/scripts/i18n.py