Add isra-fel to CODEOWNERS of .github folder (Azure#21195)

* Add isra-fel to CODEOWNERS of .github folder

* Update CODEOWNERS

---------

Co-authored-by: Yabo Hu <yabhu@microsoft.com>

Author: isra-fel

.github/CODEOWNERS

@@ -1,4 +1,7 @@
 # To make sure Network PRs go to the right branch, e.g. network-april
-/src/Network/    @MikhailTryakhov
+/src/Network/    @MikhailTryakhov @htippanaboya
 /src/Compute/    @bilaakpan-ms @sandido @dkulkarni-ms @haagha @madewithsmiles @MS-syh2qs @grizzlytheodore
 /src/PolicyInsights/  @pilor
+
+# Make sure changes to .github folder go through our team's double check
+/.github/        @isra-fel