Check if cargo version is updated

.gitea/workflows/ci.yaml

@@ -22,4 +22,33 @@ jobs:
           key: ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock') }}-loadstar
       - run: cargo publish -n
   
+  check-cargo-version:
+    runs-on: ubuntu-latest
 
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Get current version from Cargo.toml
+        id: cargo-version
+        run: |
+          # Extract the version from Cargo.toml in the PR branch
+          CARGO_VERSION=$(grep '^version' Cargo.toml | sed -e 's/version = "//' -e 's/"//')
+          echo "cargo_version=$CARGO_VERSION" >> $GITHUB_ENV
+
+      - name: Get previous version from main branch
+        id: main-cargo-version
+        run: |
+          # Fetch the Cargo.toml from the main branch and extract its version
+          git fetch origin main
+          MAIN_CARGO_VERSION=$(git show origin/main:Cargo.toml | grep '^version' | sed -e 's/version = "//' -e 's/"//')
+          echo "main_cargo_version=$MAIN_CARGO_VERSION" >> $GITHUB_ENV
+
+      - name: Compare versions
+        run: |
+          if [ "$cargo_version" = "$main_cargo_version" ]; then
+            echo "Cargo version has not been updated."
+            exit 1
+          else
+            echo "Cargo version has been updated."
+          fi