Bump github.com/hashicorp/terraform-plugin-sdk from 1.4.1 to 1.5.0

Bumps [github.com/hashicorp/terraform-plugin-sdk](https://github.com/hashicorp/terraform-plugin-sdk) from 1.4.1 to 1.5.0.
- [Release notes](https://github.com/hashicorp/terraform-plugin-sdk/releases)
- [Changelog](https://github.com/hashicorp/terraform-plugin-sdk/blob/master/CHANGELOG.md)
- [Commits](hashicorp/terraform-plugin-sdk@v1.4.1...v1.5.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

go.mod

@@ -2,7 +2,7 @@ module github.com/mercari/terraform-provider-openpgp
 
 require (
 	github.com/hashicorp/hcl v1.0.0 // indirect
-	github.com/hashicorp/terraform-plugin-sdk v1.4.1
+	github.com/hashicorp/terraform-plugin-sdk v1.5.0
 	github.com/pkg/errors v0.8.1
 	golang.org/x/crypto v0.0.0-20190820162420-60c769a6c586
 )

go.sum

@@ -114,6 +114,8 @@ github.com/hashicorp/terraform-plugin-sdk v1.4.0 h1:b1LluARpES0Gq78oF4a9of3eS0iX
 github.com/hashicorp/terraform-plugin-sdk v1.4.0/go.mod h1:H5QLx/uhwfxBZ59Bc5SqT19M4i+fYt7LZjHTpbLZiAg=
 github.com/hashicorp/terraform-plugin-sdk v1.4.1 h1:REgN6WbySD6aIYdF6Uob3ic4eQkfh4NXSWU/casmgb4=
 github.com/hashicorp/terraform-plugin-sdk v1.4.1/go.mod h1:H5QLx/uhwfxBZ59Bc5SqT19M4i+fYt7LZjHTpbLZiAg=
+github.com/hashicorp/terraform-plugin-sdk v1.5.0 h1:hzac/oigJkGup0kI+PwBGI4/fvG7Na8kM8j9xCBrmWo=
+github.com/hashicorp/terraform-plugin-sdk v1.5.0/go.mod h1:H5QLx/uhwfxBZ59Bc5SqT19M4i+fYt7LZjHTpbLZiAg=
 github.com/hashicorp/terraform-svchost v0.0.0-20191011084731-65d371908596 h1:hjyO2JsNZUKT1ym+FAdlBEkGPevazYsmVgIMw7dVELg=
 github.com/hashicorp/terraform-svchost v0.0.0-20191011084731-65d371908596/go.mod h1:kNDNcF7sN4DocDLBkQYz73HGKwN1ANB1blq4lIYLYvg=
 github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb h1:b5rjCoWHc7eqmAS4/qyk21ZsHyb6Mxv/jykxvNTkU4M=