Bump version to v6.8.1

Signed-off-by: Moritz Zimmer <moritz.zmmr@gmail.com>

Author: moritzzimmer

README.md

@@ -1,6 +1,6 @@
 # AWS Lambda Terraform module
 
-![](https://github.com/moritzzimmer/terraform-aws-lambda/workflows/static%20analysis/badge.svg) [![Terraform Module Registry](https://img.shields.io/badge/Terraform%20Module%20Registry-6.8.0-blue.svg)](https://registry.terraform.io/modules/moritzzimmer/lambda/aws/6.8.0) ![Terraform Version](https://img.shields.io/badge/Terraform-0.12+-green.svg) [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+![](https://github.com/moritzzimmer/terraform-aws-lambda/workflows/static%20analysis/badge.svg) [![Terraform Module Registry](https://img.shields.io/badge/Terraform%20Module%20Registry-6.8.1-blue.svg)](https://registry.terraform.io/modules/moritzzimmer/lambda/aws/6.8.1) ![Terraform Version](https://img.shields.io/badge/Terraform-0.12+-green.svg) [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 
 Terraform module to create AWS [Lambda](https://www.terraform.io/docs/providers/aws/r/lambda_function.html) and accompanying resources for an efficient and secure
 development of Lambda functions like: