CI: Cap release at once per week

.github/workflows/publish.yml

@@ -1,4 +1,4 @@
-name: Release-plz
+name: Publish release
 
 permissions:
   pull-requests: write
@@ -10,8 +10,8 @@ on:
       - main
 
 jobs:
-  release-plz:
-    name: Release-plz
+  release-plz-release:
+    name: Release-plz release
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
@@ -22,6 +22,8 @@ jobs:
         uses: dtolnay/rust-toolchain@stable
       - name: Run release-plz
         uses: MarcoIeni/release-plz-action@v0.5
+        with:
+          command: release
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}

.github/workflows/release-pr.yml

@@ -0,0 +1,31 @@
+name: Create release PR
+
+permissions:
+  pull-requests: write
+  contents: write
+
+on:
+  schedule:
+    - cron: "0 3 * * 5"
+
+jobs:
+  release-plz-pr:
+    name: Release-plz PR
+    runs-on: ubuntu-latest
+    concurrency:
+      group: release-plz-${{ github.ref }}
+      cancel-in-progress: false
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+      - name: Run release-plz
+        uses: MarcoIeni/release-plz-action@v0.5
+        with:
+          command: release-pr
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}