[chore]: Bump github.com/SherClockHolmes/webpush-go from 1.3.0 to 1.4.0 (#3694)

Bumps [github.com/SherClockHolmes/webpush-go](https://github.com/SherClockHolmes/webpush-go) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/SherClockHolmes/webpush-go/releases)
- [Commits](https://github.com/SherClockHolmes/webpush-go/compare/v1.3.0...v1.4.0)

---
updated-dependencies:
- dependency-name: github.com/SherClockHolmes/webpush-go
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/vendor/github.com/golang-jwt/jwt/v5/ed25519_utils.go b/vendor/github.com/golang-jwt/jwt/v5/ed25519_utils.go
new file mode 100644
index 000000000..cdb5e68e8
--- /dev/null
+++ b/vendor/github.com/golang-jwt/jwt/v5/ed25519_utils.go
@@ -0,0 +1,64 @@
+package jwt
+
+import (
+	"crypto"
+	"crypto/ed25519"
+	"crypto/x509"
+	"encoding/pem"
+	"errors"
+)
+
+var (
+	ErrNotEdPrivateKey = errors.New("key is not a valid Ed25519 private key")
+	ErrNotEdPublicKey  = errors.New("key is not a valid Ed25519 public key")
+)
+
+// ParseEdPrivateKeyFromPEM parses a PEM-encoded Edwards curve private key
+func ParseEdPrivateKeyFromPEM(key []byte) (crypto.PrivateKey, error) {
+	var err error
+
+	// Parse PEM block
+	var block *pem.Block
+	if block, _ = pem.Decode(key); block == nil {
+		return nil, ErrKeyMustBePEMEncoded
+	}
+
+	// Parse the key
+	var parsedKey interface{}
+	if parsedKey, err = x509.ParsePKCS8PrivateKey(block.Bytes); err != nil {
+		return nil, err
+	}
+
+	var pkey ed25519.PrivateKey
+	var ok bool
+	if pkey, ok = parsedKey.(ed25519.PrivateKey); !ok {
+		return nil, ErrNotEdPrivateKey
+	}
+
+	return pkey, nil
+}
+
+// ParseEdPublicKeyFromPEM parses a PEM-encoded Edwards curve public key
+func ParseEdPublicKeyFromPEM(key []byte) (crypto.PublicKey, error) {
+	var err error
+
+	// Parse PEM block
+	var block *pem.Block
+	if block, _ = pem.Decode(key); block == nil {
+		return nil, ErrKeyMustBePEMEncoded
+	}
+
+	// Parse the key
+	var parsedKey interface{}
+	if parsedKey, err = x509.ParsePKIXPublicKey(block.Bytes); err != nil {
+		return nil, err
+	}
+
+	var pkey ed25519.PublicKey
+	var ok bool
+	if pkey, ok = parsedKey.(ed25519.PublicKey); !ok {
+		return nil, ErrNotEdPublicKey
+	}
+
+	return pkey, nil
+}