MINOR: Add the possibility to have no Schedule and trigger the workflow manually

[IceS2]

Adding the possibility to trigger the workflow manually.

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Type of change:

• [x] Improvement

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Checklist:

• [x] I have read the CONTRIBUTING document.
• [ ] My PR title is Fixes <issue-number>: <short explanation>
• [ ] I have commented on my code, particularly in hard-to-understand areas.
• [ ] For JSON Schema changes: I updated the migration scripts or explained why it is not needed.

[github-actions[bot]]

Jest test Coverage

UI tests summary

Lines	Statements	Branches	Functions
	63.75% (39692/62263)	40.45% (15779/39011)	42.48% (4719/11109)

[github-actions[bot]]

The Java checkstyle failed.

Please run mvn spotless:apply in the root of your repository and commit the changes to this PR. You can also use pre-commit to automate the Java code formatting.

You can install the pre-commit hooks with make install_test precommit_install.

[sonarcloud[bot]]

Quality Gate passed for 'open-metadata-ui'

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 SonarQube Cloud

[sonarcloud[bot]]

Quality Gate passed for 'open-metadata-ingestion'

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 SonarQube Cloud