Updating go version to 1.17

[lamminade]

Prerequisites

Put an x into the box(es) that apply:

• [ ] This pull request fixes a bug.
• [ ] This pull request adds a feature.
• [x] This pull request enhances existing functionality.
• [ ] This pull request introduces breaking change.

Description

upgrades go version

Issues Resolved

resolves issues such as vendor/github.com/hashicorp/terraform-plugin-go/tftypes/attribute_path.go:118:5: undefined: errors.As which occur when go version is below 1.14

Checklist

Put an x into all boxes that apply:

Tests

• [ ] I have added tests to cover my changes.
• [x] All tests pass when I run make test.

Documentation

• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.

Code Style

• [x] My code follows the code style of this project.
• [x] All checks pass when I run make checkfmt and make lint.