ci: Update golangci-lint config to latest

[jonathan-innis]

Fixes #N/A

Description

Update golangci-lint config to the latest, removing deprecating settings run.skip-dirs and govet.check-shadowing. This also enables more strict checking on govet

How was this change tested?

make presubmit

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[netlify]

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[coveralls]

Pull Request Test Coverage Report for Build 9073182704

Details

• 0 of 1 (0.0%) changed or added relevant line in 1 file are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.02%) to 82.232%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/providers/instance/instance.go	0	1	0.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/providers/amifamily/ami.go	1	90.43%

Totals
Change from base Build 9071538389:	-0.02%
Covered Lines:	5438
Relevant Lines:	6613

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💛 - Coveralls

[jigisha620]

LGTM