.github/workflows: Test on Terraform 1.4.* versions (#131)

Reference: https://github.com/hashicorp/terraform-providers-devex-internal/issues/139

.github/workflows/test.yml

@@ -62,6 +62,8 @@ jobs:
           - '1.0.*'
           - '1.1.*'
           - '1.2.*'
+          - '1.3.*'
+          - '1.4.*'
     steps:
       - uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
       - uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 # v3.5.0