resource/aws_ssm_document: Add support for Session document_type

[gazoakley]

Fixes #5843

Output from acceptance testing:

$ make testacc TEST=./aws TESTARGS='-run=TestAccAWSSSMDocument_session'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./aws -v -run=TestAccAWSSSMDocument_session -timeout 120m
=== RUN   TestAccAWSSSMDocument_session
--- PASS: TestAccAWSSSMDocument_session (23.98s)
PASS
ok  	github.com/terraform-providers/terraform-provider-aws/aws	24.024s

[bflad]

LGTM, thanks @gazoakley! 🚀

10 tests passed (all tests)
--- PASS: TestAccAWSSSMDocument_basic (16.01s)
--- PASS: TestAccAWSSSMDocument_params (22.84s)
--- PASS: TestAccAWSSSMDocument_Tags (25.08s)
--- PASS: TestAccAWSSSMDocument_session (27.38s)
--- PASS: TestAccAWSSSMDocument_automation (29.01s)
--- PASS: TestAccAWSSSMDocument_DocumentFormat_YAML (29.52s)
--- PASS: TestAccAWSSSMDocument_permission_private (32.48s)
--- PASS: TestAccAWSSSMDocument_update (36.77s)
--- PASS: TestAccAWSSSMDocument_permission_change (39.93s)
--- PASS: TestAccAWSSSMDocument_permission_public (51.14s)

[bflad]

This has been released in version 1.36.0 of the AWS provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!