Replace multierr with errors.Join for error handling (#462)

This reduces an dependency on package not in stdlib.

Author: liamjm

attest/tpm.go

@@ -22,14 +22,14 @@ import (
 	"encoding/asn1"
 	"encoding/base64"
 	"encoding/binary"
+	"errors"
 	"fmt"
 	"io"
 	"net/url"
 	"strings"
 
 	"github.com/google/go-tpm/legacy/tpm2"
 	"github.com/google/go-tpm/tpmutil"
-	"go.uber.org/multierr"
 )
 
 const (
@@ -349,7 +349,7 @@ func pcrbanks(tpm io.ReadWriter) ([]HashAlg, error) {
 	for i, v := range vals {
 		pcrb, ok := v.(tpm2.PCRSelection)
 		if !ok {
-			errs = multierr.Append(errs, fmt.Errorf("failed to convert value %d to tpm2.PCRSelection: %v", i, v))
+			errs = errors.Join(errs, fmt.Errorf("failed to convert value %d to tpm2.PCRSelection: %v", i, v))
 			continue
 		}
 

go.mod

@@ -8,7 +8,6 @@ require (
 	github.com/google/go-cmp v0.7.0
 	github.com/google/go-tpm v0.9.6
 	github.com/google/go-tpm-tools v0.4.6
-	go.uber.org/multierr v1.11.0
 	golang.org/x/sys v0.37.0
 )