CI: Add arm builds to the matrix

Author: larskanis

.github/workflows/ci.yml

@@ -21,6 +21,11 @@ jobs:
           build_ruby: "3.1.6/x64"
           run_mri_spec: v3_4_1
 
+        - target_ruby: "3.4.1"
+          arch: "arm-ucrt"
+          build_ruby: "3.1.6/x64"
+          run_mri_spec: v3_4_1
+
         - target_ruby: "3.3.6"
           arch: "x86-msvcrt"
           build_ruby: "3.1.6/x64"
@@ -61,6 +66,11 @@ jobs:
           build_ruby: "3.0.7/x64"
           run_mri_spec: master
 
+        - target_ruby: "head"
+          arch: "arm-ucrt"
+          build_ruby: "3.1.6/x64"
+          run_mri_spec: master
+
     runs-on: windows-latest
     env:
       arch: ${{ matrix.arch }}