Revert "Update dependencies"

vendor/golang.org/x/oauth2/internal/oauth2.go

@@ -26,7 +26,7 @@ func ParseKey(key []byte) (*rsa.PrivateKey, error) {
 	if err != nil {
 		parsedKey, err = x509.ParsePKCS1PrivateKey(key)
 		if err != nil {
-			return nil, fmt.Errorf("private key should be a PEM or plain PKCS1 or PKCS8; parse error: %v", err)
+			return nil, fmt.Errorf("private key should be a PEM or plain PKSC1 or PKCS8; parse error: %v", err)
 		}
 	}
 	parsed, ok := parsedKey.(*rsa.PrivateKey)

vendor/golang.org/x/oauth2/internal/token.go

@@ -5,7 +5,6 @@
 package internal
 
 import (
-	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -18,6 +17,7 @@ import (
 	"strings"
 	"time"
 
+	"golang.org/x/net/context"
 	"golang.org/x/net/context/ctxhttp"
 )
 

vendor/golang.org/x/oauth2/internal/transport.go

@@ -5,8 +5,9 @@
 package internal
 
 import (
-	"context"
 	"net/http"
+
+	"golang.org/x/net/context"
 )
 
 // HTTPClient is the context key to use with golang.org/x/net/context's