Update dependencies

Among others, this updates minio-go, so that the new "eu-west-3" zone
for AWS is supported.

vendor/cloud.google.com/go/firestore/testdata/update-paths-st-noarray.textproto

@@ -0,0 +1,15 @@
+# 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 ServerTimestamp sentinel must be the value of a field. Firestore transforms
+# don't support array indexing.
+
+description: "update-paths: ServerTimestamp cannot be in an array value"
+update_paths: <
+  doc_ref_path: "projects/projectID/databases/(default)/documents/C/d"
+  field_paths: <
+    field: "a"
+  >
+  json_values: "[1, 2, \"ServerTimestamp\"]"
+  is_error: true
+>