Update issue templates

Author: rviscomi

.github/ISSUE_TEMPLATE/tech-report.md

@@ -2,8 +2,8 @@
 name: Tech Report
 about: Raise an issue or feature request related to the HTTP Archive Tech Report
 title: 'Tech Report: '
-labels: ''
-assignees: ''
+labels: Tech Report
+assignees: rviscomi, sarahfossheim
 
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