Bump the Ginkgo version to v2

[blackpiglet]

• [ ] Replace RunSpecsWithDefaultAndCustomReporters - #7957
• [ ] Adjust default timeout - #7958
• [ ] Use labels instead of regex - #7959
• [ ] Support running test parallelly - #7960
• [ ] Bump Ginkgo to v2 - #7961

Describe the problem/challenge you have

Ginkgo v2 supports more features, and the Ginkgo v1 is not maintained anymore. https://github.com/onsi/ginkgo/blob/ver2/docs/MIGRATING_TO_V2.md#upgrading-to-ginkgo-20 https://github.com/onsi/ginkgo/blob/ver2/docs/MIGRATING_TO_V2.md#aborting-the-test-suite

Propose to upgrade the Velero E2E using Ginkgo to v2 to utilize the new functionality.

Describe the solution you'd like

Anything else you would like to add:

Environment:

• Velero version (use velero version):
• Kubernetes version (use kubectl version):
• Kubernetes installer & version:
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):

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