autoscaling: adds new capacity_reservation_specification argument

[hvbamzn]

Description

Issue: #42285

Adds support for CapacityReservationSpecification in autoscaling group resource.
https://docs.aws.amazon.com/autoscaling/ec2/userguide/use-ec2-capacity-reservations.html

Relations

Closes #42285

References

Documentation: https://docs.aws.amazon.com/autoscaling/ec2/userguide/use-ec2-capacity-reservations.html

Output from Acceptance Testing

➜  terraform-provider-aws git:(f-odcr_in_autoscaling) make testacc TESTARGS='-run=TestAccAutoScalingGroup_basic\|TestAccAutoScalingGroup_simple\|TestAccAutoScalingGroup_capacityReservationSpecificationBasic\|TestAccAutoScalingGroup_capacityReservationSpecificationWithTarget' PKG=autoscaling
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.8 test ./internal/service/autoscaling/... -v -count 1 -parallel 20  -run=TestAccAutoScalingGroup_basic\|TestAccAutoScalingGroup_simple\|TestAccAutoScalingGroup_capacityReservationSpecificationBasic\|TestAccAutoScalingGroup_capacityReservationSpecificationWithTarget -timeout 360m -vet=off
2025/04/25 11:22:28 Initializing Terraform AWS Provider...
=== RUN   TestAccAutoScalingGroup_basic
=== PAUSE TestAccAutoScalingGroup_basic
=== RUN   TestAccAutoScalingGroup_simple
=== PAUSE TestAccAutoScalingGroup_simple
=== RUN   TestAccAutoScalingGroup_capacityReservationSpecificationBasic
=== PAUSE TestAccAutoScalingGroup_capacityReservationSpecificationBasic
=== RUN   TestAccAutoScalingGroup_capacityReservationSpecificationWithTarget
=== PAUSE TestAccAutoScalingGroup_capacityReservationSpecificationWithTarget
=== CONT  TestAccAutoScalingGroup_basic
=== CONT  TestAccAutoScalingGroup_capacityReservationSpecificationBasic
=== CONT  TestAccAutoScalingGroup_simple
=== CONT  TestAccAutoScalingGroup_capacityReservationSpecificationWithTarget
--- PASS: TestAccAutoScalingGroup_basic (23.78s)
--- PASS: TestAccAutoScalingGroup_capacityReservationSpecificationBasic (55.75s)
--- PASS: TestAccAutoScalingGroup_capacityReservationSpecificationWithTarget (73.04s)
--- PASS: TestAccAutoScalingGroup_simple (148.42s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/autoscaling	152.298s

...

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