[master] Upgrade to latest dependencies

[knative-automation]

Cron. -knative-prow-robot

/cc knative/eventing-writers
/assign knative/eventing-writers

Produced via:

./hack/update-deps.sh --upgrade --release v0.21
./hack/update-codegen.sh

Details:

bumping knative.dev/pkg 6045ed4...4b2ae07:
  > 4b2ae07 Replace deprecated github.com/markbates/inflect with github.com/gobuffalo/flect (# 2014)
  > 8878069 upgrade to latest dependencies (# 2010)
  > c493a9e Update common github actions (# 2009)

[codecov]

Codecov Report

Merging #4848 (8813f77) into master (daa085d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4848   +/-   ##
=======================================
  Coverage   81.29%   81.29%           
=======================================
  Files         292      292           
  Lines        8326     8326           
=======================================
  Hits         6769     6769           
  Misses       1147     1147           
  Partials      410      410           

---

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[pierDipi]

/lgtm
/approve

[knative-prow-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: knative-automation, pierDipi

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[lionelvillard]

/hold

I want to rerun the kind tests

[lionelvillard]

probably just a fluke.
/unhold

[pierDipi]

I saw this one worked: https://github.com/knative/eventing/pull/4848/checks?check_run_id=1854970499 (same k8s version)