Add actions for macOS

(And missing version in lock file)

Author: beeender

.github/workflows/rust.yml

@@ -11,11 +11,20 @@ env:
 
 jobs:
   build:
-
-    runs-on: ubuntu-latest
+    name: Build and test for ${{ matrix.os}}
+    runs-on: ${{ matrix.os }}
+    permissions:
+      contents: read
+    strategy:
+      matrix:
+        include:
+          ## Linux builds
+          - os: ubuntu-latest
+          ## macOS builds
+          - os: macos-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Build
       run: cargo build --verbose
     - name: Run tests