azurerm_synapse_spark_pool - spark_version now supports 3.0

[oguzkilcan]

Fixes #11970

❯ make acctests SERVICE='synapse' TESTARGS='-run=TestAccSynapseSpark3Pool_'
==> Checking that code complies with gofmt requirements...
==> Checking that Custom Timeouts are used...
==> Checking that acceptance test packages are used...
TF_ACC=1 go test -v ./azurerm/internal/services/synapse -run=TestAccSynapseSpark3Pool_ -timeout 180m -ldflags="-X=github.com/terraform-providers/terraform-provider-azurerm/version.ProviderVersion=acc"
2021/05/26 18:02:43 [DEBUG] not using binary driver name, it's no longer needed
2021/05/26 18:02:43 [DEBUG] not using binary driver name, it's no longer needed
=== RUN   TestAccSynapseSpark3Pool_complete
=== PAUSE TestAccSynapseSpark3Pool_complete
=== RUN   TestAccSynapseSpark3Pool_update
=== PAUSE TestAccSynapseSpark3Pool_update
=== CONT  TestAccSynapseSpark3Pool_complete
=== CONT  TestAccSynapseSpark3Pool_update
--- PASS: TestAccSynapseSpark3Pool_complete (1533.91s)
--- PASS: TestAccSynapseSpark3Pool_update (1707.01s)
PASS
ok  	github.com/terraform-providers/terraform-provider-azurerm/azurerm/internal/services/synapse	1708.478s

[mbfrahry]

LGTM!

[ghost]

This has been released in version 2.61.0 of the provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading. As an example:

provider "azurerm" {
    version = "~> 2.61.0"
}
# ... other configuration ...

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