ci: Always bump patch on release branch (#886)

And ensure that release-please triggers on pushes to release branch.

Author: jimmidyson

.github/workflows/release-please.yml

@@ -7,6 +7,7 @@ on:
   push:
     branches:
       - main
+      - release/v*
 
 permissions:
   contents: write

release-please-config.json

@@ -10,7 +10,8 @@
           "path": "docs/hugo.toml",
           "jsonpath": "$.params.version"
         }
-      ]
+      ],
+      "versioning": "always-bump-patch"
     }
   }
 }