Update module golang.org/x/sync to v0.20.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
golang.org/x/sync	v0.2.0 → v0.20.0

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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):

• The go directive was updated for compatibility reasons

Details:

Package	Change
go	1.25 -> 1.25.0