Update file line terminators to LF

[RainbowMango]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

This PR doesn't change anything but adjusts the file line terminators from CRLF to LF.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:
Find files with CRLF line terminators:

# find /root/go/src/github.com/karmada-io/karmada/ -type f -exec file {} \; | grep -v "vendor" | grep CRLF
/root/go/src/github.com/karmada-io/karmada/.github/workflows/ci-image-scanning.yaml: ASCII text, with CRLF line terminators
/root/go/src/github.com/karmada-io/karmada/pkg/resourceinterpreter/default/thirdparty/resourcecustomizations/apps.kruise.io/v1alpha1/DaemonSet/customizations.yaml: ASCII text, with CRLF line terminators
/root/go/src/github.com/karmada-io/karmada/pkg/resourceinterpreter/default/thirdparty/resourcecustomizations/kyverno.io/v1/Policy/testdata/desired-policy.yaml: ASCII text, with CRLF line terminators
/root/go/src/github.com/karmada-io/karmada/pkg/resourceinterpreter/default/thirdparty/resourcecustomizations/kyverno.io/v1/Policy/testdata/status-file.yaml: ASCII text, with CRLF line terminators
/root/go/src/github.com/karmada-io/karmada/pkg/resourceinterpreter/default/thirdparty/resourcecustomizations/kyverno.io/v1/Policy/testdata/observed-policy.yaml: ASCII text, with CRLF line terminators

Does this PR introduce a user-facing change?:

NONE

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 36.57%. Comparing base (5dd4ab8) to head (e9e3c62).
Report is 4 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5670      +/-   ##
==========================================
+ Coverage   36.54%   36.57%   +0.02%     
==========================================
  Files         648      648              
  Lines       45079    45079              
==========================================
+ Hits        16473    16486      +13     
+ Misses      27363    27350      -13     
  Partials     1243     1243              

Flag	Coverage Δ
unittests	36.57% <ø> (+0.02%)	⬆️

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[RainbowMango]

cc file owner @yike21 @zhzhuang-zju

[yike21]

/lgtm
Thanks! :)

[zhzhuang-zju]

/lgtm

[RainbowMango]

cc @chaunceyjiang @XiShanYongYe-Chang for approval.

[chaunceyjiang]

/lgtm

[XiShanYongYe-Chang]

/approve

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: XiShanYongYe-Chang

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Needs approval from an approver in each of these files:

• .github/workflows/OWNERS [XiShanYongYe-Chang]
• pkg/resourceinterpreter/default/thirdparty/OWNERS [XiShanYongYe-Chang]

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