fix: updating turbo.json file for pipelines

[DhairyaMajmudar]

Description
-> While running the command npm run lint:fix warnings were thrown in the terminal due to deprecated pipeline field in turbo.json file which is now replaced by latest tasks field

-> Run script npm run lint:fix

-> Docs reference:- https://turbo.build/repo/docs/reference/configuration#defining-tasks

-> Screenshots

Before	After

cc: @derberg

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Latest commit: 39c944b

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[derberg]

it is not a problem with the wrong key name, it is a problem that we use wrong $schema pointer that points to latest (newer version of turborepo without pipeline)

migrating to new version of turborepo is a separate issue that you can create. For not I close this PR as the fix is provided in https://github.com/asyncapi/generator/pull/1304/files#r1800918106