message: Workaround for broken MSRV by base64-url
diff: @@ -46,6 +46,10 @@ itoa = "0.4.5"
  blocking = "0.4.4"
  async-channel = "1.1.0"
  +# Delete this dependency when the following issue gets fixed:
  +# https://github.com/marshallpierce/rust-base64/issues/135
  +base64 = "=0.12.1"
  +
  [dev-dependencies]
  criterion = "0.3.2"
  quicli = "0.4.0"
  