Changelog for v1-21-eks-18

This changelog highlights the changes for v1-21-eks-18.

Changes

• Updated Kubernetes from v1.21.13 to v1.21.14. This is the last patch version of Kubernetes 1.21
• Added 4 patches
• 0025-EKS-PATCH-Add-rate-limiting-when-calling-STS-assume-.patch
• 0027-EKS-PATCH-Update-naming-for-a-const.patch
• 0028-EKS-PATCH-Skip-mount-point-checks-when-possible-duri.patch
• 0029-EKS-PATCH-Overlaid-OS-s-environment-variables-with-t.patch