Fix boolean attribute saving in content creation and update

[andrzejewsky]

What type of PR is this?

• [ ] 💅 Refactor
• [ ] 🌟 Feature
• [ ] 🔥 Bug Fix
• [ ] 🔩 Maintenance
• [ ] 🛠 Workflow CI/CD changes

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• [ ] Yes!
• [ ] No... here is why: Writing tests are mandatory, please replace this text with why test are not included in this PR

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🦋 Changeset detected

Latest commit: 181d6807e88202027e2ca432f5b792638ebe44d7

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

This PR includes changesets to release 1 package

| Name | Type | | ---------------- | ----- | | saleor-dashboard | Patch |

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