Add ichern@ to Bazel contributors

PiperOrigin-RevId: 241728533
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 3eeea56..26d92e0 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -108,3 +108,4 @@
 Tony Aiuto <aiuto@google.com>
 Andy Scott <andy.g.scott@gmail.com>
 Jamie Snape <jamie.snape@kitware.com>
+Irina Chernushina <ichern@google.com>
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