[Do not merge] Downgrade ddtrace to 3.12.3 and add pull_request trigger to master.yml

[nubtron]

What does this PR do?

Motivation

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[github-actions]

⚠️ Recommendation: Add qa/skip-qa Label

This PR does not modify any files shipped with the agent.

To help streamline the release process, please consider adding the qa/skip-qa label if these changes do not require QA testing.

[github-actions]

Test Results

   348 files   -   331     348 suites   - 331   4h 0m 43s ⏱️ - 49m 43s
 7 932 tests  -   313   7 344 ✅  -   767    567 💤 +452  0 ❌  - 2  21 🔥 +4 
26 918 runs   - 3 004  23 464 ✅  - 2 581  3 433 💤  - 425  0 ❌  - 2  21 🔥 +4 

For more details on these errors, see this check.

Results for commit 56c0447. ± Comparison against base commit 574d63b.

This pull request removes 313 tests.

vsphere.tests.legacy.test_cache_config ‑ test___init__
vsphere.tests.legacy.test_cache_config ‑ test__check_type
vsphere.tests.legacy.test_cache_config ‑ test_clear
vsphere.tests.legacy.test_cache_config ‑ test_get_set_interval
vsphere.tests.legacy.test_cache_config ‑ test_get_set_last
vsphere.tests.legacy.test_metadata_cache ‑ test_contains
vsphere.tests.legacy.test_metadata_cache ‑ test_get_metadata
vsphere.tests.legacy.test_metadata_cache ‑ test_get_metrics
vsphere.tests.legacy.test_metadata_cache ‑ test_set_metadata
vsphere.tests.legacy.test_metadata_cache ‑ test_set_metrics
…

This pull request skips 453 tests.

activemq.tests.test_check ‑ test_activemq_metrics
activemq.tests.test_check ‑ test_artemis_metrics
activemq_xml.tests.test_activemq_xml ‑ test_e2e
aerospike.tests.test_aerospike ‑ test_e2e
aerospike.tests.test_aerospike ‑ test_openmetrics_e2e
airflow.tests.test_e2e ‑ test_service_checks_e2e
amazon_msk.tests.test_e2e ‑ test_node_check
amazon_msk.tests.test_e2e ‑ test_node_check_legacy
ambari.tests.test_ambari ‑ test_e2e
apache.tests.test_apache ‑ test_e2e
…

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

❌ Patch coverage is 9.09091% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.61%. Comparing base (0f96340) to head (56c0447).
⚠️ Report is 80 commits behind head on master.

Additional details and impacted files

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