🌱 Add weekly security scan using govulncheck and trivy

[lentzi90]

What this PR does / why we need it:

Manual backport of #2536 (needed for the make targets so that the scan can run).

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

1. Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

TODOs:

• squashed commits
• if necessary:
  • includes documentation
  • adds unit tests

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[mnaser]

/lgtm

[lentzi90]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lentzi90

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[lentzi90]

/cherry-pick release-0.10

[k8s-infra-cherrypick-robot]

@lentzi90: #2553 failed to apply on top of branch "release-0.10":

Applying: Add weekly security scan using govulncheck and trivy
Using index info to reconstruct a base tree...
M	Makefile
Falling back to patching base and 3-way merge...
Auto-merging Makefile
CONFLICT (content): Merge conflict in Makefile
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config advice.mergeConflict false"
Patch failed at 0001 Add weekly security scan using govulncheck and trivy

In response to this:

/cherry-pick release-0.10

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