Trying a first version.

action.yaml

@@ -0,0 +1,16 @@
+name: Infrement version number to max.
+description: Increases a version number until the the version number is invalid. Onyl updates minor and below. No support for previews. Only Semantic numbers are supported.
+inputs:
+  url-pattern:
+    description: The url from which to download. Needs to contain at least one {{VERSION}} marker to be replaced.
+    required: true
+  start-version:
+    description: The version number with wich to start.
+    required: true
+outputs:
+  max_version:
+    description: The maximum downloadable version found.
+
+runs:
+  using: node12
+  main: index.js