fix: update frozen pkcs 12 package as proposed in golang.org/x/crypto… (#34)

…/pkcs12

<!-- markdownlint-disable MD041 -->
#### What this PR does / why we need it

#### Which issue(s) this PR fixes
<!--
Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
-->
#27

Author: fabianburth

cmd/signing-server/main.go

@@ -21,7 +21,7 @@ import (
 	"github.com/spf13/pflag"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
-	"golang.org/x/crypto/pkcs12"
+	"software.sslmate.com/src/go-pkcs12"
 
 	"github.com/open-component-model/signing-server/pkg/encoding"
 	"github.com/open-component-model/signing-server/pkg/handler/sign"

go.mod

@@ -9,7 +9,10 @@ require (
 	github.com/pkg/errors v0.9.1
 	github.com/spf13/pflag v1.0.6
 	go.uber.org/zap v1.27.0
-	golang.org/x/crypto v0.39.0
+	software.sslmate.com/src/go-pkcs12 v0.5.0
 )
 
-require go.uber.org/multierr v1.10.0 // indirect
+require (
+	go.uber.org/multierr v1.10.0 // indirect
+	golang.org/x/crypto v0.39.0 // indirect
+)

go.sum

@@ -24,3 +24,5 @@ golang.org/x/crypto v0.39.0 h1:SHs+kF4LP+f+p14esP5jAoDpHU8Gu/v9lFRK6IT5imM=
 golang.org/x/crypto v0.39.0/go.mod h1:L+Xg3Wf6HoL4Bn4238Z6ft6KfEpN0tJGo53AAPC632U=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+software.sslmate.com/src/go-pkcs12 v0.5.0 h1:EC6R394xgENTpZ4RltKydeDUjtlM5drOYIG9c6TVj2M=
+software.sslmate.com/src/go-pkcs12 v0.5.0/go.mod h1:Qiz0EyvDRJjjxGyUQa2cCNZn/wMyzrRJ/qcDXOQazLI=