chore: increase codecov coverage thresholds (hiero-ledger#1191)

Signed-off-by: nagaraju504 <[email protected]>
Co-authored-by: nagaraju504 <[email protected]>

Author: nagaraju504

CHANGELOG.md

@@ -60,6 +60,7 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 - Added prompt for codeRabbit on how to review /examples ([#1180](https://github.com/hiero-ledger/hiero-sdk-python/issues/1180)) 
 
 ### Changed
+- Updated Codecov coverage thresholds in 'codecov.yml' to require 90% of project coverage and 92% of patch coverage (#1157)
 - Reduce office-hours reminder spam by posting only on each user's most recent open PR, grouping by author and sorting by creation time (#1121)
 - Pylint cleanup for token_airdrop_transaction_cancel.py (#1081) [@tiya-15](https://github.com/tiya-15)
 - Move `account_allowance_delete_transaction_hbar.py` from `examples/` to `examples/account/` for better organization (#1003)

codecov.yml

@@ -1,13 +1,14 @@
 # codecov.yml
 coverage:
-    status:
-        project:
-            default:
-                target: 70%
-        patch:
-            default:
-                target: 80%
-                threshold: 1%
+  status:
+    project:
+      default:
+        target: 90%
+        threshold: 1%
+    patch:
+      default:
+        target: 92%
+        threshold: 2%
 
 comment:
-    layout: "reach, diff, flags"
+  layout: "reach, diff, flags"