Run dependabot on Mondays

[ivanvc]

Recently we've been having Dependabot (not security) updates on Wednesdays and Thursdays. This breaks our manual weekly dependency. Although Monday is the default day
(https://docs.github.com/en/code-security/reference/supply-chain-security/dependabot-options-reference#interval), explicitly define is as Monday.

[kubernetes-prow]

@ivanvc: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-etcd-robustness-amd64	4555000	link	true	/test pull-etcd-robustness-amd64

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.64%. Comparing base (00a7653) to head (4555000).

Additional details and impacted files

see 14 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #22300      +/-   ##
==========================================
- Coverage   69.66%   69.64%   -0.03%     
==========================================
  Files         449      449              
  Lines       38193    38193              
==========================================
- Hits        26609    26600       -9     
- Misses      10158    10169      +11     
+ Partials     1426     1424       -2     

---

Continue to review full report in Codecov by Harness.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 00a7653...4555000. Read the comment docs.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[kubernetes-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahrtr, ivanvc

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• .github/OWNERS [ahrtr,ivanvc]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment