fix(helm): update chart volsync to 0.12.0

[bot-kanga]

This PR contains the following updates:

Package	Update	Change
volsync (source)	patch	0.12.0-rc.2 -> 0.12.0

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Release Notes

backube/volsync (volsync)

v0.12.0

Compare Source

Changed

• imagePullSecrets in helm charts will be copied from volsync controller
  namespace to the mover namespace so mover jobs can use them
• Updated release to build on golang 1.23
• Syncthing updated to v1.29.2
• kube-rbac-proxy image configurable in helm chart values
• mover scripts updated to use sync -f to only sync the target filesystem at
  the end of mover tasks
• Updates the ensure_initialized function in the restic mover script to
  follow restic recommendations

Fixed

• All movers should return error if not able to EnsurePVCFromSrc
• Fix for mover job/service name length too long (>63 chars) if the
  replicationsource or replicationdestination CR name is too long

Security

• kube-rbac-proxy upgraded to 0.18.2

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