ci: make workflows dispatchable

Author: null8626

.github/workflows/release.yml

@@ -2,6 +2,7 @@ name: Publish
 on:
   release:
     types: [created]
+  workflow_dispatch: null
 jobs:
   publish:
     runs-on: ubuntu-latest

.github/workflows/test.yml

@@ -9,6 +9,7 @@ on:
     paths:
       - '.github/workflows/test.yml'
       - 'topstats/**/*.py'
+  workflow_dispatch: null
 jobs:
   test:
     runs-on: ubuntu-latest