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/delete-time-precond.textproto

@@ -0,0 +1,25 @@
+# DO NOT MODIFY. This file was generated by
+# github.com/GoogleCloudPlatform/google-cloud-common/testing/firestore/cmd/generate-firestore-tests/generate-firestore-tests.go.
+
+# Delete supports a last-update-time precondition.
+
+description: "delete: delete with last-update-time precondition"
+delete: <
+  doc_ref_path: "projects/projectID/databases/(default)/documents/C/d"
+  precondition: <
+    update_time: <
+      seconds: 42
+    >
+  >
+  request: <
+    database: "projects/projectID/databases/(default)"
+    writes: <
+      delete: "projects/projectID/databases/(default)/documents/C/d"
+      current_document: <
+        update_time: <
+          seconds: 42
+        >
+      >
+    >
+  >
+>