Allow paths without a leading slash in probes

[skonto]

Fixes #15673

Proposed Changes

• K8s allows that afaik so we should keep the UX.

[knative-prow]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.80%. Comparing base (28dff5c) to head (8821c8f).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15681      +/-   ##
==========================================
- Coverage   80.81%   80.80%   -0.02%     
==========================================
  Files         222      222              
  Lines       18034    18034              
==========================================
- Hits        14574    14572       -2     
- Misses       3089     3090       +1     
- Partials      371      372       +1     

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[skonto]

I noticed this warning.

Your workflow is using a version of actions/cache that is scheduled for deprecation, actions/cache@0c45773. Please update your workflow to use either v3 or v4 of actions/cache to avoid interruptions. Learn more: https://github.blog/changelog/2024-12-05-notice-of-upcoming-releases-and-breaking-changes-for-github-actions/#actions-cache-v1-v2-and-actions-toolkit-cache-package-closing-down

cc @dprotaso is this a false positive as the version is v4.0.2?

[skonto]

/assign @dprotaso