Update issue templates with "needs-triage" label

Author: VeckoTheGecko

.github/ISSUE_TEMPLATE/01_feature.md

@@ -2,6 +2,6 @@
 name: 🔼 Parcels feature requests, and other enhancements
 about: Suggest an improvement to the parcels codebase.
 title: ""
-labels: ""
+labels: ["needs-triage"]
 assignees: ""
 ---

.github/ISSUE_TEMPLATE/02_bug.yaml

@@ -1,6 +1,6 @@
 name: "🐛 Bug Report"
 description: Describe a bug in the parcels codebase. For support related to your specific use case, please post in Q&A in our Discussions tab.
-labels: ["bug"]
+labels: ["bug", "needs-triage"]
 body:
   - type: "input"
     attributes: