fix(deps): update patch digest dependencies (v1.6.x)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/longhorn/backupstore	require	digest	326b984 -> c126834
github.com/longhorn/go-common-libs	require	digest	66d5f9e -> 7060fef
github.com/longhorn/go-iscsi-helper	require	digest	88a14fe -> 2d71415
github.com/longhorn/sparse-tools	require	digest	18b207e -> 37af3c6

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[renovate]

ℹ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 3 additional dependencies were updated

Details:

Package	Change
golang.org/x/net	v0.28.0 -> v0.29.0
github.com/opencontainers/runc	v1.1.13 -> v1.1.14
golang.org/x/text	v0.17.0 -> v0.18.0