chore: add go-critic to mise tools

Provisions the standalone gocritic binary alongside the other go-based
linters now that gocritic is enabled in .golangci.yml.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: jackc

mise.toml

@@ -1,5 +1,6 @@
 [tools]
 go = '1.26.3'
+"go:github.com/go-critic/go-critic/cmd/gocritic" = "latest"
 "go:github.com/gordonklaus/ineffassign" = "latest"
 "go:github.com/mdempsky/unconvert" = "latest"
 "go:golang.org/x/tools/cmd/goimports" = "latest"