Update kaniko fork

[matifali]

Coder's kaniko fork is outdated and prevents updating some of the dependencies that have vulnerabilities.
Details can be seen here: https://github.com/coder/envbuilder/security/dependabot

This is a must-do before we launch 1.0
cc: @bpmct

[kylecarbs]

coder/kaniko#7

[matifali]

Should we add a scheduled workflow to keep it in sync weekly or monthly?
https://github.com/wei/pull looks promising

[johnstcn]

Kaniko has since updated to go1.22 which means we also need to do so. Unfortunately our codersdk deps prevent this right now (see: coder/coder#11342). For now I'm going to manually vendor these in.

[mtojek]

@johnstcn Is there anything left here or can we resolve this issue?

[johnstcn]

@mtojek coder/kaniko#7 is still un-merged. Some of the tests are failing partially due to some changes we have that upstream does not. However, all of our envbuilder tests appear to work fine with these changes.

Then #195 can be updated and approved.

[johnstcn]

This is done now.