hack/golangci-lint.sh: fix binary lookup order

The install script only reuses the binary from $PATH if the version
matches otherwise installs into ./bin, if the version of $PATH matches
then the binary from ./bin is removed there.

That means the actual run must prefer ./bin as this has a known good
version when it exists unlike $PATH which can be the wrong version.

This fixes the logic added in commit cf021c4ba9.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>