Add validation-selective

In response to:

warning: Git tree '/Users/anviking/IOHK/cardano-wallet' is dirty
direnv: ([/usr/local/bin/direnv export fish]) is taking a while to execute. Use CTRL-C to give up.
trace: To make project.plan-nix for haskell-project a fixed-output derivation but not materialized, set `plan-sha256` to the output of the 'calculateMaterializedSha' script in 'passthru'.
trace: To materialize project.plan-nix for haskell-project entirely, pass a writable path as the `materialized` argument and run the 'updateMaterialized' script in 'passthru'.
error: The Haskell package set does not contain the package: validation-selective (build dependency).
       If you are using Stackage, make sure that you are using a snapshot that contains the package. Otherwise you may need to update the Hackage snapshot you are using, usually by updating haskell.nix.
(use '--show-trace' to show detailed location information)
warning: Git tree '/Users/anviking/IOHK/cardano-wallet' is dirty

stack.yaml

@@ -76,6 +76,7 @@ extra-deps:
 - servant-multipart-client-0.12.1
 - protolude-0.3.0
 - ekg-core-0.1.1.7
+- validation-selective-0.1.0.1
 
 # cardano-addresses-3.9.0
 - git: https://github.com/input-output-hk/cardano-addresses