Upgrade the envtest version

[tenzen-y]

Signed-off-by: tenzen-y yuki.iwai.tz@gmail.com

What this PR does / why we need it:
We upgraded the K8s version in #1684, so I also upgraded the envtest and setup-env version.

/cc @johnugeorge

Which issue(s) this PR fixes (optional, in Fixes #<issue number>, #<issue number>, ... format, will close the issue(s) when PR gets merged):
Fixes #

Checklist:

• Docs included if any changes are user facing

[coveralls]

Pull Request Test Coverage Report for Build 3385950356

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 15 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.1%) to 39.561%

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Files with Coverage Reduction	New Missed Lines	%
pkg/controller.v1/mpi/mpijob_controller.go	6	76.83%
pkg/controller.v1/pytorch/pytorchjob_controller.go	9	60.32%

Totals
Change from base Build 3384327728:	-0.1%
Covered Lines:	2342
Relevant Lines:	5920

---

💛 - Coveralls

[terrytangyuan]

Thanks!

/lgtm

[google-oss-prow]

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This pull-request has been approved by: tenzen-y, terrytangyuan

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