chore(deps): update module github.com/refraction-networking/utls to v1.6.0

This MR contains the following updates:

Package	Type	Update	Change
github.com/refraction-networking/utls	require	minor	v1.5.4 -> v1.6.0

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Release Notes

refraction-networking/utls (github.com/refraction-networking/utls)

v1.6.0: One step closer to ECH

Compare Source

What's Changed

• improvement: cleanup by @​VeNoMouS in https://github.com/refraction-networking/utls/pull/253
• build(deps): bump golang.org/x/net from 0.14.0 to 0.17.0 by @​dependabot in https://github.com/refraction-networking/utls/pull/254
• Deprecate usage of OmitEmptyPsk field in PreSharedKeyExtension (closes #​255) by @​sleeyax in https://github.com/refraction-networking/utls/pull/256
• sync: go 1.21.4 by @​gaukas in https://github.com/refraction-networking/utls/pull/261
• fix: no padding if raw clienthello is too short by @​gaukas in https://github.com/refraction-networking/utls/pull/263
• new: vendor godicttls package by @​gaukas in https://github.com/refraction-networking/utls/pull/265
• feat: add GREASEEncryptedClientHelloExtension by @​gaukas in https://github.com/refraction-networking/utls/pull/266
• feat: chrome 120 non-pq client hello by @​hax0r31337 in https://github.com/refraction-networking/utls/pull/268
• bump: firefox and chrome auto parrot to latest by @​gaukas in https://github.com/refraction-networking/utls/pull/269
• fix: grease ech parrot for chrome 120 by @​hax0r31337 in https://github.com/refraction-networking/utls/pull/271
• fix: incorrect firefox nss parrot ECH params by @​gaukas in https://github.com/refraction-networking/utls/pull/272

New Contributors

• @​sleeyax made their first contribution in https://github.com/refraction-networking/utls/pull/256
• @​hax0r31337 made their first contribution in https://github.com/refraction-networking/utls/pull/268

Full Changelog: https://github.com/refraction-networking/utls/compare/v1.5.4...v1.6.0

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