Bump golang.org/x/net from 0.55.0 to 0.56.0 (#6310)

Bumps [golang.org/x/net](https://github.com/golang/net) from 0.55.0 to 0.56.0.
- [Commits](https://github.com/golang/net/compare/v0.55.0...v0.56.0)

---
updated-dependencies:
- dependency-name: golang.org/x/net
  dependency-version: 0.56.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -22,11 +22,11 @@ require (
 	github.com/vishvananda/netlink v1.3.1
 	github.com/xtls/reality v0.0.0-20260322125925-9234c772ba8f
 	go4.org/netipx v0.0.0-20231129151722-fdeea329fbba
-	golang.org/x/crypto v0.51.0
+	golang.org/x/crypto v0.53.0
 	golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842
-	golang.org/x/net v0.55.0
-	golang.org/x/sync v0.20.0
-	golang.org/x/sys v0.45.0
+	golang.org/x/net v0.56.0
+	golang.org/x/sync v0.21.0
+	golang.org/x/sys v0.46.0
 	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2
 	golang.zx2c4.com/wireguard v0.0.0-20250521234502-f333402bd9cb
 	golang.zx2c4.com/wireguard/windows v1.0.1
@@ -51,10 +51,10 @@ require (
 	github.com/quic-go/qpack v0.6.0 // indirect
 	github.com/vishvananda/netns v0.0.5 // indirect
 	github.com/wlynxg/anet v0.0.5 // indirect
-	golang.org/x/mod v0.35.0 // indirect
-	golang.org/x/text v0.37.0 // indirect
+	golang.org/x/mod v0.36.0 // indirect
+	golang.org/x/text v0.38.0 // indirect
 	golang.org/x/time v0.14.0 // indirect
-	golang.org/x/tools v0.44.0 // indirect
+	golang.org/x/tools v0.45.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20260226221140-a57be14db171 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect