use ameba github action

.github/workflows/ci.yml

@@ -40,5 +40,15 @@ jobs:
       - name: Check formatting
         run: crystal tool format --check
 
-      - name: Run ameba linter
-        run: bin/ameba
+  check_ameba:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install Crystal
+        uses: crystal-lang/install-crystal@v1
+      - name: Check out repository code
+        uses: actions/checkout@v3
+      - name: Crystal Ameba Linter
+        id: crystal-ameba
+        uses: crystal-ameba/github-action@v0.7.1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

shard.yml

@@ -12,10 +12,6 @@ dependencies:
     github: crystal-loot/exception_page
     version: ~> 0.4.1
 
-development_dependencies:
-  ameba:
-    github: crystal-ameba/ameba
-
 crystal: ">= 0.36.0"
 
 license: MIT