chore(internal/releaser): add further log messages

internal/releaser/util/util.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"strings"
 
+	log "github.com/sirupsen/logrus"
 	"golang.org/x/oauth2"
 )
 
@@ -27,6 +28,8 @@ func GetAccessToken(providerName string) (string, error) {
 	var exists bool
 	envName := fmt.Sprintf("%s_ACCESS_TOKEN", strings.ToUpper(providerName))
 
+	log.Debugf("check if %s environment variable is set", envName)
+
 	if token, exists = os.LookupEnv(envName); !exists {
 		return "", fmt.Errorf("Could not find %s in the enviroment variables. Please check if it is set", envName)
 	}