Update vendored library cloud.google.com/go

vendor/cloud.google.com/go/firestore/testdata/query-invalid-operator.textproto

@@ -0,0 +1,19 @@
+# DO NOT MODIFY. This file was generated by
+# github.com/GoogleCloudPlatform/google-cloud-common/testing/firestore/cmd/generate-firestore-tests/generate-firestore-tests.go.
+
+# The != operator is not supported.
+
+description: "query: invalid operator in Where clause"
+query: <
+  coll_path: "projects/projectID/databases/(default)/documents/C"
+  clauses: <
+    where: <
+      path: <
+        field: "a"
+      >
+      op: "!="
+      json_value: "4"
+    >
+  >
+  is_error: true
+>