secrets: update tardigrade key

modules/flake/shell.nix

···
         meta.description = "Devshell";
         packages = [
           config.formatter
+          inputs.agenix.packages.${system}.default
         ];
       };
 

secrets/cloudflare_api_key.age

···
 age-encryption.org/v1
--> ssh-ed25519 hutt7Q s5CcOsffa6iFqrrm4dTvQ8yeKhGR38SUeNxdRVQ4Anw
-y/rWVktzyWXlJI/VuXrVNt2zAIMxF3gKQXSN/7eTjFY
--> ssh-ed25519 /1TDmg u/AH9iIZg6O5SZDBvUwknMayev70I0Gum3TvBsPiJD8
-4uOwQXCCFZONVlo3xI/7SVCkKxfIqyaqO5qJRRkxTHo
---- IzerlEo1Pt9lmFkIFgJ7JLhn9pFtaMEFThCaDIWa6SQ
-�>Z�R����fg��+_��P&�1wEc�����:/�Q߿��J���y��U�*F����ۑ��3N��(��,��HO�E���xj�^'VAMd�RNY���G2d�vϻ#�������C�b)䋙�{W~�W�^eڏT]�a
+-> ssh-ed25519 6eU4Cg WlvgB7ILihDmGIEWOT/hDTkxg9nTbo99SkUxbvdDclo
+a0Kr7gS9r2mi1IKWg9yrgxd1HEyT3KnPIloFeyaPmKE
+-> ssh-ed25519 /1TDmg KIMNtTJCUzbYCn4P0JeoVYGs1vbH48gNsXi34WEGJj8
+3qXmsARXHOGFDbWSBuv/VVEnBw2h+wpTZdbpnn43KSU
+--- fCE6BJIEBfzRfXaCVZiDTGjq/V9Ah75qZuGujo49TpY
+a7�]}��VHZܐ�츥@������&$����T�)d��ıu+�+�}<Y�'�s��?
+���h(�^1βE�V�9�h͉a͟iB��q�+~@>��E��Q��ӷ,���MXX�.��_wj�q��>�;����.8�

secrets/secrets.nix

···
 let
-  tardigrade = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBTLST0ClW/VF3hoVWsc/GXTPfgs5qAFc3olQfX7svHy";
+  tardigrade = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBYKixY95z08/B06s53e3gqvU18CSBQ0aQcGzY08o0fg";
   rushilu = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMwH5x4fa2x7vB+cTIV1sEk1MDy/RKWDaFSQ+qwkDgRi";
 in
 {