Ignore NEWS snippets in code coverage stats (GH-18194)

(cherry picked from commit 7023288dc500008609e7a4d12ae710c2093c3fc6)

Co-authored-by: Nick Coghlan <ncoghlan@gmail.com>
diff --git a/.github/codecov.yml b/.github/codecov.yml
index 9d97dfb..ea504f4 100644
--- a/.github/codecov.yml
+++ b/.github/codecov.yml
@@ -5,7 +5,7 @@
 comment: off
 ignore:
   - "Doc/**/*"
-  - "Misc/*"
+  - "Misc/**/*"
   - "Mac/**/*"
   - "PC/**/*"
   - "PCbuild/**/*"