charts: bump advanced-statefulset to v0.7.1 (#7028)

[ti-chi-bot]

This is an automated cherry-pick of #7028

Summary

• Update the release-1.x chart default AdvancedStatefulSet controller image from v0.7.0 to v0.7.1.
• Pick up the v0.7 maintenance fix that makes ControllerRevision adoption retries idempotent.
• Backport this dependency update to release-1.6 after the source PR merges.

Why

AdvancedStatefulSet v0.7.0 can retry a partially completed native StatefulSet migration with a mix of orphaned and already-owned ControllerRevisions. The retry may fail with attempt to adopt revision owned by ... before Pod lifecycle reconciliation, preventing a missing Pod from being recreated.

The fix was backported in pingcap/advanced-statefulset#133 and released as v0.7.1.

How

• Change only advancedStatefulset.image in the Helm chart defaults.
• Keep the existing v0.7 API, CRD, command-line flags, and dependencies unchanged.
• Leave installations with an explicit advancedStatefulset.image override unaffected.

Testing

• helm lint charts/tidb-operator --set advancedStatefulset.create=true
• helm template tidb-operator charts/tidb-operator --namespace tidb-admin --set advancedStatefulset.create=true --show-only templates/advanced-statefulset-deployment.yaml rendered pingcap/advanced-statefulset:v0.7.1
• git diff --check origin/release-1.x..HEAD
• docker buildx imagetools inspect docker.io/pingcap/advanced-statefulset:v0.7.1 verified linux/amd64 and linux/arm64 manifests

Risks and Reviewer Focus

• When advancedStatefulset.create=true and no image override is set, applying the updated chart rolls the ASTS controller to v0.7.1.
• No TiDB Operator binary, ASTS CRD, or workload specification changes are included.
• Cluster-backed E2E was not run for this chart-only change; the source fix passed a local kind migration E2E, and the release-0.7 backport carries the same regression coverage.

Repository Checklist

Code changes

• Has Go code change
• Has CI related scripts change

Tests

• Unit test
• E2E test
• Manual test
• No code

Side effects

• Breaking backward compatibility
• Other side effects: updates the default ASTS controller image when ASTS chart deployment is enabled

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation

Release Notes

Upgrade the default AdvancedStatefulSet controller image to v0.7.1 to fix ControllerRevision adoption retries that can block Pod reconciliation after StatefulSet migration.

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