chore: Replace deprecation ioutil fucntions and add depguard rules in .golangci.yml

[dongjiang1989]

1. Go 1.16 deprecated several io/ioutil functions.

ioutil.ReadFile -> os.ReadFile

ref: https://pkg.go.dev/io/ioutil

2. Add depguard rules in .golangci.yml

3. fix golangci-lint warning

$ ./hack/verify-golangci-lint.sh
checking whether golangci-lint has been installed
installing golangci-lint .
golangci/golangci-lint info checking GitHub for tag 'v1.54.2'
golangci/golangci-lint info found version: 1.54.2 for v1.54.2/linux/amd64
golangci/golangci-lint info installed /home/runner/work/volcano-sh/volcano/bin/golangci-lint
begin run golangci-lint
level=info msg="[config_reader] Config search paths: [./ /home/runner/work/volcano/volcano/src/github.com/volcano-sh/volcano /home/runner/work/volcano/volcano/src/github.com/volcano-sh /home/runner/work/volcano/volcano/src/github.com /home/runner/work/volcano/volcano/src /home/runner/work/volcano/volcano /home/runner/work/volcano /home/runner/work /home/runner /home /]"
level=info msg="[config_reader] Used config file .golangci.yml"
level=info msg="[lintersdb] Active [11](https://github.com/volcano-sh/volcano/actions/runs/11738190031/job/32700238716#step:5:12) linters: [deadcode depguard gofmt goimports gosimple govet ineffassign staticcheck unused varcheck whitespace]"
level=info msg="[loader] Go packages loading at mode 575 (deps|exports_file|files|imports|name|compiled_files|types_sizes) took 2m[15](https://github.com/volcano-sh/volcano/actions/runs/11738190031/job/32700238716#step:5:16).339428093s"
level=warning msg="[runner] The linter 'deadcode' is deprecated (since v1.49.0) due to: The owner seems to have abandoned the linter. Replaced by unused."
level=warning msg="[runner] The linter 'varcheck' is deprecated (since v1.49.0) due to: The owner seems to have abandoned the linter. Replaced by unused."
....

[hwdef]

/lgtm

[volcano-sh-bot]

New changes are detected. LGTM label has been removed.

[volcano-sh-bot]

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[dongjiang1989]

Thanks @hwdef Please re-check it

[hwdef]

Please fix the CI

[dongjiang1989]

Please fix the CI

Hmmm....🤔️ Maybe main branch CI pipeline fail ...

ref:
https://github.com/volcano-sh/volcano/actions/runs/11714749109/job/32629965063
https://github.com/volcano-sh/volcano/actions/runs/11714749102/job/32629965564
https://github.com/volcano-sh/volcano/actions/runs/11714749120/job/32629965207