Add change note

tamasvajk · tamasvajk · commit c386ab5e51fa · 2022-02-15T09:55:18.000+01:00
diff --git a/csharp/ql/lib/change-notes/2022-02-15-hardcoded-credentials-downgrade.md b/csharp/ql/lib/change-notes/2022-02-15-hardcoded-credentials-downgrade.md
@@ -0,0 +1,5 @@
+---
+category: queryMetadata
+---
+The precision of hardcoded credentials queries (`cs/hardcoded-credentials` and
+`cs/hardcoded-connection-string-credentials`) have been downgraded to medium.
