bump metrics server version to v0.3.6

[olagacek]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind api-change

/kind bug

/kind cleanup
/kind design
/kind documentation
/kind failing-test
/kind feature
/kind flake

What this PR does / why we need it:
Bumps metrics-server version to v0.3.6
v0.3.6 contains bug fix, so that duplicate pod metrics won't break all metric storage (which caused metrics-server and hpa being down)
Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Bumps metrics-server version to v0.3.6 with following bugfix:

*  Don't break metric storage when duplicate pod metrics encountered causing hpa to fail

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

Hi @olagacek. Thanks for your PR.

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[olagacek]

/assign @kawych

[RainbowMango]

/ok-to-test

[olagacek]

/retest

[x13n]

/lgtm

[kawych]

/ok-to-test
/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kawych, olagacek

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• cluster/addons/metrics-server/OWNERS [kawych]

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[tpepper]

@olagacek should this have a release note?

[olagacek]

Release note:

Bumps metrics-server version to v0.3.6 with following bugfix:

• 🐛 Don't break metric storage when duplicate pod metrics encountered causing hpa to fail