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/create-st-alone.textproto

@@ -0,0 +1,26 @@
+# DO NOT MODIFY. This file was generated by
+# github.com/GoogleCloudPlatform/google-cloud-common/testing/firestore/cmd/generate-firestore-tests/generate-firestore-tests.go.
+
+# If the only values in the input are ServerTimestamps, then no update operation
+# should be produced.
+
+description: "create: ServerTimestamp alone"
+create: <
+  doc_ref_path: "projects/projectID/databases/(default)/documents/C/d"
+  json_data: "{\"a\": \"ServerTimestamp\"}"
+  request: <
+    database: "projects/projectID/databases/(default)"
+    writes: <
+      transform: <
+        document: "projects/projectID/databases/(default)/documents/C/d"
+        field_transforms: <
+          field_path: "a"
+          set_to_server_value: REQUEST_TIME
+        >
+      >
+      current_document: <
+        exists: false
+      >
+    >
+  >
+>