maint: change title on release workflow from (unset) var to hard-code…

…d string (honeycombio#474)

Error in previous workflow that attempted to create an issue states "Input required and not supplied: title".
While the title does match that of the example provided in the actions repo, it is based on a variable that is set in the example that we do not have set. I believe this is causing a blank title which is not allowed, as the title value is required. This PR changes the title from a variable that is unset ({ steps.date.outputs.today }}) to a hard-coded string (Bump Refinery to Latest Version).

.github/workflows/release.yml

@@ -2,6 +2,7 @@ name: Create helm chart issue on release
 on:
   release:
     types: [published]
+  workflow_dispatch:
 jobs:
   create_issue:
     runs-on: ubuntu-latest
@@ -11,7 +12,7 @@ jobs:
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           repo: github.com/honeycombio/helm-charts
-          title: ${{ steps.date.outputs.today }}
+          title: Bump Refinery to Latest Version
           body: |
             ## Bump Refinery