Prevent an error when the user tries to update a non-existing entry

[boazpoolman]

What does it do?

It prevents a 500 error when the user tries to update a non-existing entry.

Why is it needed?

To prevent the 500 error.

[changeset-bot]

🦋 Changeset detected

Latest commit: 36c4a04

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
strapi-plugin-webtools	Patch

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 39.29%. Comparing base (0625149) to head (36c4a04).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #339      +/-   ##
==========================================
+ Coverage   38.89%   39.29%   +0.39%     
==========================================
  Files           2        2              
  Lines         653      649       -4     
  Branches      163      165       +2     
==========================================
+ Hits          254      255       +1     
+ Misses        317      315       -2     
+ Partials       82       79       -3     

Flag	Coverage Δ
unit	39.29% <ø> (+0.39%)	⬆️

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