v1.31.6 release

What's Changed

• [release-1.31] chore: upgrade sidecar image versions by @andyzhangx in #2925
• [release-1.31] fix: avoid duplicate ssl mounts on Fedora node in AzureStack environment by @andyzhangx in #2928
• [release-1.31] fix: avoid get disk call in disk creation by @k8s-infra-cherrypick-robot in #2938
• [release-1.31] fix: reduce get disk calls in disk attach/detach on VMSS by @andyzhangx in #2943
• [release-1.31] chore: update max data disk count table by @k8s-infra-cherrypick-robot in #2947
• [release-1.31] fix: CVE-2025-30204 by @andyzhangx in #2960
• doc: cut v1.31.6 release by @andyzhangx in #2968

Full Changelog: v1.31.5...v1.31.6