fix: ignore test_otlp_tracing.py file in test.yml

[NirajC-Microsoft]

Purpose

This pull request updates the test workflow configuration in .github/workflows/test.yml to support an additional development branch and to exclude a new test file from the test run. The most important changes are:

Branch Support Updates:

• Added the dev-v3 branch to both the push and pull_request triggers, ensuring CI tests run for changes targeting this branch. [1] [2]

Test Exclusions:

• Updated the test command to ignore the src/backend/tests/test_otlp_tracing.py test file, preventing it from running during CI.
• ...

Does this introduce a breaking change?

• Yes
• No

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information