Revert "ci: remove license check jobs from the workflow file."

This reverts commit 39db295.

Signed-off-by: Costin Lupu <[email protected]>

.github/workflows/ci.yml

@@ -50,3 +50,29 @@ jobs:
     - run: cargo install --locked --version "~0.17" cargo-audit
     - run: cargo audit --ignore RUSTSEC-2020-0159 --ignore RUSTSEC-2020-0071
 
+  license:
+    name: Check dependencies for licenses
+    runs-on: ubuntu-latest
+    outputs:
+      license_changed: ${{ steps.license_diff.outputs.license_changed }}
+    steps:
+    - uses: actions/checkout@v3
+    - uses: dtolnay/rust-toolchain@stable
+    - uses: Swatinem/rust-cache@v2
+    - run: cargo install --locked --version "~0.5" cargo-about
+    - run: cargo about generate --workspace --output-file "${{ runner.temp }}/licenses.html" about.hbs
+    - id: license_diff
+      run: |
+        if diff -q THIRD_PARTY_LICENSES_RUST_CRATES.html ${{ runner.temp }}/licenses.html ; then
+          echo "license_changed=NO" >> $GITHUB_OUTPUT
+        else
+          echo "license_changed=YES" >> $GITHUB_OUTPUT
+        fi
+
+  license_update:
+    name: Check if rust crates license files needs updates
+    runs-on: ubuntu-latest
+    needs: license
+    continue-on-error: true
+    steps:
+      - run: test "${{ needs.license.outputs.license_changed }}" == "NO"