Update Formula/s/speedtest-cli.rb

Co-authored-by: Rui Chen <rui@chenrui.dev>

Author: eleanordoesntcode

Formula/s/speedtest-cli.rb

@@ -16,7 +16,9 @@ class SpeedtestCli < Formula
     sha256 cellar: :any_skip_relocation, all: "93487be757c9b3763deeb1b1415ee8ad10c5a80fcc9ebaeacbb8fbac3e9b9474"
   end
 
+  # see issue in https://github.com/sivel/speedtest-cli/pull/796
   deprecate! date: "2026-01-18", because: :unmaintained
+  disable! date: "2027-01-18", because: :unmaintained
 
   depends_on "python@3.14"