Update to release-plz-v0.3.21 (#79)

Author: marcoieni

action.yml

@@ -14,7 +14,7 @@ inputs:
     required: false
   version:
     description: "Release-plz version to use. It must be an existing git tag name. For example `release-plz-v0.2.45`. (Default: `latest`)."
-    default: "release-plz-v0.3.20"
+    default: "release-plz-v0.3.21"
     required: false
 branding:
   icon: "zap"
@@ -26,7 +26,7 @@ runs:
       uses: jaxxstorm/action-install-gh-release@v1.10.0
       with:
         repo: obi1kenobi/cargo-semver-checks
-        tag: v0.22.1
+        tag: v0.23.0
         cache: enable
     - name: Install release-plz
       uses: jaxxstorm/action-install-gh-release@v1.10.0