fake-gcs-server: disable checks

pkgs/by-name/fa/fake-gcs-server/package.nix

@@ -18,6 +18,11 @@ buildGoModule rec {
 
   vendorHash = "sha256-oTJ4DCsDazo58ozsAKI0BG7rxfF8oeiIl6vQpRng+LM=";
 
+  # Unit tests fail to start the emulator server in some environments (e.g. Hydra) for some reason.
+  #
+  # Disabling to avoid flakiness.
+  doCheck = false;
+
   passthru = {
     updateScript = nix-update-script { };
   };