fix(deps): update github.com/sapcc/swift-http-import digest to 6c318a9

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/sapcc/swift-http-import	require	digest	312477b → 6c318a9

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[renovate]

ℹ️ 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):

• 8 additional dependencies were updated

Details:

Package	Change
github.com/gophercloud/gophercloud/v2	v2.11.1 -> v2.12.0
github.com/gophercloud/utils/v2	v2.0.0-20260107124036-1d7954eb9711 -> v2.0.0-20260424064311-2eeed4ceb3e9
github.com/klauspost/compress	v1.18.5 -> v1.18.6
github.com/sapcc/go-bits	v0.0.0-20260410082200-20a228a480cb -> v0.0.0-20260507090738-58bd3afe1717
github.com/sapcc/go-api-declarations	v1.21.0 -> v1.22.0
golang.org/x/crypto	v0.49.0 -> v0.50.0
golang.org/x/net	v0.52.0 -> v0.53.0
golang.org/x/text	v0.35.0 -> v0.36.0