Change AWS provider version to 4.0.

What's Changed

• auto changelog action and changelog.md and dependabot.yml file added. by @mamrajyadav in #38
• use terraform letast version by @theprashantyadav in #35
• added kms module and update module by @theprashantyadav in #39
• Issue 435 by @Tanveer143s in #41

New Contributors

• @Tanveer143s made their first contribution in #41

Full Changelog: 1.0.4...1.0.5