Replace go.mozilla.org/pkcs7 with github.com/smallstep/pkcs7

`github.com/smallstep/pkcs7` is a actively maintained drop-in
replacement for `go.mozilla.org/pkcs7`.

Fixes #107

Signed-off-by: Mikel Olasagasti Uranga <mikel@olasagasti.info>

go.mod

@@ -9,9 +9,9 @@ require (
  github.com/opencontainers/go-digest v1.0.0
  github.com/opencontainers/image-spec v1.1.0
  github.com/sirupsen/logrus v1.9.3
+ github.com/smallstep/pkcs7 v0.0.0-20240723090913-5e2c6a136dfa
  github.com/stefanberger/go-pkcs11uri v0.0.0-20201008174630-78d3cae3a980
  github.com/stretchr/testify v1.9.0
- go.mozilla.org/pkcs7 v0.0.0-20200128120323-432b2356ecb1
  golang.org/x/crypto v0.24.0
  golang.org/x/term v0.21.0
  google.golang.org/grpc v1.64.1

go.sum

@@ -17,14 +17,14 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
 github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
+github.com/smallstep/pkcs7 v0.0.0-20240723090913-5e2c6a136dfa h1:FtxzVccOwaK+bK4bnWBPGua0FpCOhrVyeo6Fy9nxdlo=
+github.com/smallstep/pkcs7 v0.0.0-20240723090913-5e2c6a136dfa/go.mod h1:SoUAr/4M46rZ3WaLstHxGhLEgoYIDRqxQEXLOmOEB0Y=
 github.com/stefanberger/go-pkcs11uri v0.0.0-20201008174630-78d3cae3a980 h1:lIOOHPEbXzO3vnmx2gok1Tfs31Q8GQqKLc8vVqyQq/I=
 github.com/stefanberger/go-pkcs11uri v0.0.0-20201008174630-78d3cae3a980/go.mod h1:AO3tvPzVZ/ayst6UlUKUv6rcPQInYe3IknH3jYhAKu8=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-go.mozilla.org/pkcs7 v0.0.0-20200128120323-432b2356ecb1 h1:A/5uWzF44DlIgdm/PQFwfMkW0JX+cIcQi/SwLAmZP5M=
-go.mozilla.org/pkcs7 v0.0.0-20200128120323-432b2356ecb1/go.mod h1:SNgMg+EgDFwmvSmLRTNKC5fegJjB7v23qTQ0XLGUNHk=
 golang.org/x/crypto v0.24.0 h1:mnl8DM0o513X8fdIkmyFE/5hTYxbwYOjDS/+rK6qpRI=
 golang.org/x/crypto v0.24.0/go.mod h1:Z1PMYSOR5nyMcyAVAIQSKCDwalqy85Aqn1x3Ws4L5DM=
 golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ=

keywrap/pkcs7/keywrapper_pkcs7.go

@@ -25,7 +25,7 @@ import (
  "github.com/containers/ocicrypt/config"
  "github.com/containers/ocicrypt/keywrap"
  "github.com/containers/ocicrypt/utils"
- "go.mozilla.org/pkcs7"
+ "github.com/smallstep/pkcs7"
 )
 
 type pkcs7KeyWrapper struct {