refactor: use os.UserHomeDir instead of go-homedir

Let's use the built-in Go function instead of the library. It makes
go-homedir an indirect dependency as it is still in-use by transitive
dependency.

Signed-off-by: Vincent Demeester <[email protected]>

Author: vdemeester

go.mod

@@ -13,7 +13,7 @@ require (
 	github.com/hashicorp/go-multierror v1.1.1
 	github.com/hashicorp/golang-lru v1.0.2
 	github.com/jenkins-x/go-scm v1.14.58
-	github.com/mitchellh/go-homedir v1.1.0
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/opencontainers/image-spec v1.1.1 // indirect
 	github.com/pkg/errors v0.9.1
 	github.com/sigstore/sigstore v1.9.4

pkg/credentials/writer/writer.go

@@ -25,7 +25,6 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/mitchellh/go-homedir"
 	"github.com/tektoncd/pipeline/pkg/apis/pipeline"
 )
 
@@ -71,7 +70,7 @@ func CopyCredsToHome(credPaths []string) error {
 		return nil //nolint:nilerr // safe to ignore error; no credentials available to copy
 	}
 
-	homepath, err := homedir.Dir()
+	homepath, err := os.UserHomeDir()
 	if err != nil {
 		return fmt.Errorf("error getting the user's home directory: %w", err)
 	}