Update package.json files

[ShadowCat567]

When attempting to publish packages from amplify backend using trusted publishing, this error was appearing:

 error an error occurred while publishing @aws-amplify/backend-*: E422 422 Unprocessable Entity - PUT https://registry.npmjs.org/@aws-amplify%2fbackend-* - Error verifying sigstore provenance bundle: Failed to validate repository information: package.json: "repository.url" is "", expected to match "https://github.com/aws-amplify/amplify-backend" from provenance

Updated the packge.json files in all of our public packages to include:

"repository": {
    "type": "git",
    "url": "https://github.com/aws-amplify/amplify-backend.git"
  },

to fix this error.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[changeset-bot]

🦋 Changeset detected

Latest commit: 1b4ccc9

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

This PR includes changesets to release 24 packages

Name	Type
@aws-amplify/deployed-backend-client	Patch
@aws-amplify/backend-output-schemas	Patch
@aws-amplify/backend-output-storage	Patch
@aws-amplify/backend-deployer	Patch
@aws-amplify/backend-function	Patch
@aws-amplify/schema-generator	Patch
@aws-amplify/backend-storage	Patch
@aws-amplify/model-generator	Patch
@aws-amplify/auth-construct	Patch
@aws-amplify/backend-secret	Patch
create-amplify	Patch
@aws-amplify/form-generator	Patch
@aws-amplify/ai-constructs	Patch
@aws-amplify/client-config	Patch
@aws-amplify/platform-core	Patch
@aws-amplify/backend-auth	Patch
@aws-amplify/backend-data	Patch
@aws-amplify/plugin-types	Patch
@aws-amplify/backend-ai	Patch
@aws-amplify/cli-core	Patch
@aws-amplify/backend	Patch
@aws-amplify/sandbox	Patch
ampx	Patch
@aws-amplify/seed	Patch

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