bug: fix bug making operations feeds endpoint fail when called without data_type filtering

[AlfredNwolisa]

Summary:

This PR fixes the bug that makes operations feeds endpoint fail when called without data_type filtering. Added a filter to filter out gbfs feeds from the get endpoint

Expected behavior:

Get feeds endpoint can be call without data_type filtering.

Testing tips:

Provide tips, procedures and sample files on how to test the feature.
Testers are invited to follow the tips AND to try anything they deem relevant outside the bounds of the testing tips.

Please make sure these boxes are checked before submitting your pull request - thanks!

• Run the unit tests with ./scripts/api-tests.sh to make sure you didn't break anything
• Add or update any needed documentation to the repo
• Format the title like "feat: [new feature short description]". Title must follow the Conventional Commit Specification(https://www.conventionalcommits.org/en/v1.0.0/).
• Linked all relevant issues
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[davidgamez]

LGTM