ci: trigger cargo publish from release workflow (#103)

GITHUB_TOKEN-created releases don't fire on:release triggers,
so dispatch cargo-publish.yml directly from release.yml (same
pattern as GHCR image publish).

Signed-off-by: danbugs <danilochiarlone@gmail.com>

Author: danbugs

.github/workflows/cargo-publish.yml

@@ -1,8 +1,6 @@
 name: Publish to crates.io
 
 on:
-  release:
-    types: [published]
   workflow_dispatch:
     inputs:
       dry_run:

.github/workflows/release.yml

@@ -56,3 +56,10 @@ jobs:
         run: |
           VERSION="${{ steps.version.outputs.version }}"
           gh workflow run publish-examples.yml --ref "v$VERSION"
+
+      - name: Trigger crates.io publish
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          VERSION="${{ steps.version.outputs.version }}"
+          gh workflow run cargo-publish.yml --ref "v$VERSION" -f dry_run=false