Publish snapshot action

Author: oliemansm

.github/workflows/snapshot.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: gradle/wrapper-validation-action@v1
   build:
     name: Publish snapshot
-    runs-on: unbuntu-latest
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v2