Fix issue templates

The labels need to be marked explicitly as strings because they have
a ":".

Signed-off-by: Leandro Lucarella <leandro.lucarella@frequenz.com>

Author: llucax

.github/ISSUE_TEMPLATE/bug.yml

@@ -5,7 +5,9 @@ name: Report something is not working properly 🐛
 description:
   Use this if there is something that is not working properly.  If you are not
   sure or you need help making something work, please ask a question instead.
-labels: [ priority:❓, type:bug ]
+labels:
+  - "priority:❓"
+  - "type:bug"
 body:
   - type: markdown
     attributes:

.github/ISSUE_TEMPLATE/feature.yml

@@ -3,7 +3,10 @@
 
 name: Request a feature or enhancement ✨
 description: Use this if something is missing or could be done better or more easily.
-labels: [ part:❓, priority:❓, type:enhancement ]
+labels:
+  - "part:❓"
+  - "priority:❓"
+  - "type:enhancement"
 body:
   - type: markdown
     attributes: