UI: Actions: Replace runs list description semicolon

The current format makes the text look somewhat like this:

```
testing.yml #15065 :Commit 103306f00c pushed by n0toose
```

This looks wrong. We will have to work on that list at a later point
in time anyways, as well as make the way that we separate information
in subheaders in lists like this one more consistent.

However, this should do for now.

This change should make each entry look like this instead:

```
testing.yml #15065 - Commit 103306f00c pushed by n0toose
```

(cherry picked from commit 870a1c85c75622a566dcab0eee12f0d91d91a06a)

templates/repo/actions/runs_list.tmpl

@@ -15,7 +15,7 @@
 					{{if .Title}}{{.Title}}{{else}}{{ctx.Locale.Tr "actions.runs.empty_commit_message"}}{{end}}
 				</a>
 				<div class="flex-item-body">
-					<b>{{if not $.CurWorkflow}}{{.WorkflowID}} {{end}}#{{.Index}}</b>:
+					<b>{{if not $.CurWorkflow}}{{.WorkflowID}} {{end}}#{{.Index}}</b> - 
 					{{- if .ScheduleID -}}
 						{{ctx.Locale.Tr "actions.runs.scheduled"}}
 					{{- else -}}