[CI] Dependabot skip rebasing on every merge

[unlikelyzero]

Closes #7217

Describe your changes:

Dependabot is rebasing on every dependency change which is adding up. This disables to automatic rebasing

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Is this change backwards compatible? For example, developers won't need to change how they are calling the API or how they've extended core plugins such as Tables or Plots.

Author Checklist

• Changes address original issue?
• Tests included and/or updated with changes?
• Command line build passes?
• Has this been smoke tested?
• Testing instructions included in associated issue OR is this a dependency/testcase change?

Reviewer Checklist

• Changes appear to address issue?
• Reviewer has tested changes by following the provided instructions?
• Changes appear not to be breaking changes?
• Appropriate automated tests included?
• Code style and in-line documentation are appropriate?
• Has associated issue been labelled unverified? (only applicable if this PR closes the issue)
• Has associated issue been labelled bug? (only applicable if this PR is for a bug fix)

[deploysentinel]

Current Playwright Test Results Summary

✅ 14 Passing

Run may still be in progress, this comment will be updated as current testing workflow or job completes...

(Last updated on 11/08/2023 11:26:50pm UTC)

Run Details

Running Workflow e2e-couchdb on Github Actions

Commit: a7cc402

Started: 11/08/2023 11:20:44pm UTC

View Detailed Build Results

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Current Playwright Test Results Summary

✅ 153 Passing

Run may still be in progress, this comment will be updated as current testing workflow or job completes...

(Last updated on 11/08/2023 11:26:50pm UTC)

Run Details

Running Job e2e-stable on CircleCI

Commit: a7cc402

Started: 11/08/2023 11:19:57pm UTC

View Detailed Build Results

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[codecov]

Codecov Report

Merging #7216 (a7cc402) into master (51eb2a4) will decrease coverage by 0.31%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #7216      +/-   ##
==========================================
- Coverage   56.01%   55.70%   -0.31%     
==========================================
  Files         652      652              
  Lines       26178    26178              
  Branches     2525     2525              
==========================================
- Hits        14663    14583      -80     
- Misses      10809    10901      +92     
+ Partials      706      694      -12     

Flag	Coverage Δ		*Carryforward flag
e2e-full	41.82% <ø> (ø)		Carriedforward from 51eb2a4
e2e-stable	58.11% <ø> (+0.11%)	⬆️
unit	48.91% <ø> (-0.51%)	⬇️

*This pull request uses carry forward flags. Click here to find out more.

see 15 files with indirect coverage changes

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[ozyx]

I approve.