chore(base-cluster/dependencies): update docker.io/bitnami/kubectl docker tag to v1.29.6

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
docker.io/bitnami/kubectl (source)	patch	1.29.4 -> 1.29.6

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[teutonet-bot]

:robot: I have diffed this beep boop

"/$namespace/$kind/$name.yaml" for normal resources "/$namespace/HelmRelease/$name/$namespace/$kind/$name.yaml" for HelmReleases <- this is recursive 'null' means it's either cluster-scoped or it's in the default namespace for the HelmRelease

charts/base-cluster/ci/monitoring-ingress-unauthenticated-values.yaml

charts/base-cluster/ci/rbac-values.yaml

charts/base-cluster/ci/pagerduty-values.yaml

charts/base-cluster/ci/velero-backupStorageLocations-gen-values.yaml

charts/base-cluster/ci/flux-gitrepositories-gen-values.yaml

charts/base-cluster/ci/imagepullsecrets-values.yaml

charts/base-cluster/values.yaml has no changes

charts/base-cluster/ci/artifacthub-values.yaml

charts/base-cluster/ci/disabled-ingress-values.yaml

charts/base-cluster/ci/priorityclasses-values.yaml

charts/base-cluster/ci/deadmansswitch-values.yaml

charts/base-cluster/ci/monitoring-oidc-values.yaml

charts/base-cluster/ci/basic-values.yaml

charts/base-cluster/ci/monitoring-oidc-ingress-disabled-values.yaml

charts/base-cluster/ci/limitrange-resourcequota-values.yaml