Run Ameba as a separate CI workflow

Author: Sija

.github/workflows/ameba.yml

@@ -0,0 +1,19 @@
+name: Ameba
+
+on:
+  push:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Download source
+        uses: actions/checkout@v6
+
+      - name: Run Ameba Linter
+        uses: crystal-ameba/github-action@master

.github/workflows/ci-base.yml

@@ -63,8 +63,5 @@ jobs:
       - name: Check formatting (Crystal)
         run: crystal tool format --check
 
-      - name: Run ameba
-        run: bin/ameba
-
       - name: Check for typos
         uses: crate-ci/typos@v1