Add workaround for errcheck linter warning

[mboersma]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

Updates the golangci-lint configuration to silence an errcheck linter warning.

Which issue(s) this PR fixes:

Fixes #2801

Special notes for your reviewer:

See golangci/golangci-lint#4733

[mboersma]

Before:

+ golangci-lint version
golangci-lint has version 1.58.2 built with go1.22.3 from 8c4cfb61 on 2024-05-19T18:08:33Z
+ for mod in $MODULE_BASED
+ cd ./benchmark
+ GO111MODULE=on
+ golangci-lint run ./...
level=warning msg="[config_reader] The configuration option `linters.errcheck.ignore` is deprecated, please use `linters.errcheck.exclude-functions`."
+ for mod in $MODULE_BASED
+ cd ./clusterloader2
+ GO111MODULE=on
+ golangci-lint run ./...
level=warning msg="[config_reader] The configuration option `linters.errcheck.ignore` is deprecated, please use `linters.errcheck.exclude-functions`."
+ for mod in $MODULE_BASED
+ cd ./dns/dnsperfgo
+ GO111MODULE=on
+ golangci-lint run ./...
level=warning msg="[config_reader] The configuration option `linters.errcheck.ignore` is deprecated, please use `linters.errcheck.exclude-functions`."
...

After:

+ golangci-lint version
golangci-lint has version 1.58.2 built with go1.22.3 from 8c4cfb61 on 2024-05-19T18:08:33Z
+ for mod in $MODULE_BASED
+ cd ./benchmark
+ GO111MODULE=on
+ golangci-lint run ./...
+ for mod in $MODULE_BASED
+ cd ./clusterloader2
+ GO111MODULE=on
+ golangci-lint run ./...
+ for mod in $MODULE_BASED
+ cd ./dns/dnsperfgo
+ GO111MODULE=on
+ golangci-lint run ./...
+ for mod in $MODULE_BASED
+ cd ./dns/jsonify
...

[wojtek-t]

/lgtm
/approve

Thanks!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mboersma, wojtek-t

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Needs approval from an approver in each of these files:

• OWNERS [wojtek-t]

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