Release v1.21.0

What's Changed

• Added NFS Enabled Check by @rishabhatdell in #195
• method to get volume metrics for an sdc by @bpjain2004 in #198
• Refactor Approve SDC related methods by @suryagupta4 in #199
• Add license-checker workflow by @harishp8889 in #201
• Bump actions/checkout from 4 to 5 in the github-actions group by @dependabot[bot] in #202
• Bump github.com/stretchr/testify from 1.10.0 to 1.11.0 in the golang group by @dependabot[bot] in #205
• Fixed the null version during auto-release by @meggm in #204
• Updated license-checker workflow by @harishp8889 in #207
• Update go version to 1.25 by @csm-release[bot] in #206
• Update README with Disclaimer by @khareRajshree in #211
• Fix license header inconsistencies by @github-actions[bot] in #208

New Contributors

• @bpjain2004 made their first contribution in #198
• @meggm made their first contribution in #204
• @github-actions[bot] made their first contribution in #208

Full Changelog: v1.20.0...v1.21.0