ci: add release-plz config.

.github/workflows/release-plz.yml

@@ -0,0 +1,22 @@
+name: 🔁 Update Release PR
+on:
+  push:
+    branches:
+      - main
+jobs:
+  release-plz:
+    name: Release-plz
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          token: ${{ secrets.RELEASE_PLZ_TOKEN }}
+      - name: Run release-plz
+        uses: MarcoIeni/release-plz-action@v0.5
+        with:
+          command: release-pr
+        env:
+          GITHUB_TOKEN: ${{ secrets.RELEASE_PLZ_TOKEN }}
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}

release-plz.toml

@@ -0,0 +1,7 @@
+[workspace]
+dependencies_update = true
+git_release_enable = false
+publish = false
+git_tag_enable = true
+pr_labels = ["release"]
+semver_check = false