Update golang.org/x/mobile digest to 81488f6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
golang.org/x/mobile	require	digest	5c265dc → 81488f6

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[renovate]

ℹ Artifact update notice

File name: appctr/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):

• 4 additional dependencies were updated

Details:

Package	Change
golang.org/x/mod	v0.30.0 -> v0.31.0
golang.org/x/sync	v0.18.0 -> v0.19.0
golang.org/x/sys	v0.38.0 -> v0.39.0
golang.org/x/tools	v0.39.0 -> v0.40.0

[renovate]

ℹ️ Artifact update notice

File name: appctr/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):

• 4 additional dependencies were updated
• The go directive was updated for compatibility reasons

Details:

Package	Change
go	1.24.0 -> 1.25.0
golang.org/x/mod	v0.30.0 -> v0.34.0
golang.org/x/sync	v0.18.0 -> v0.20.0
golang.org/x/sys	v0.39.0 -> v0.42.0
golang.org/x/tools	v0.39.0 -> v0.43.0