.github/PULL_REQUEST_TEMPLATE

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<!-- ==== 🐛 Remove this line WHEN AND ONLY WHEN you're fixing a bug, follow the checklist 👇 ====
### Fix <bug description or bug issue link>
- [ ] Add a unit test to verify that the fix works.
- [ ] Explain briefly why the bug exists and how to fix it.
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<!-- ==== 📈 Remove this line WHEN AND ONLY WHEN you're improving the performance, follow the checklist 👇 ====
### Improve the performance of <class or module or ...>
- [ ] Add a benchmark for the improvement, refer to [the existing ones](https://github.com/apache/skywalking/blob/master/apm-commons/apm-datacarrier/src/test/java/org/apache/skywalking/apm/commons/datacarrier/LinkedArrayBenchmark.java)
- [ ] The benchmark result.
```text
<Paste the benchmark results here>
```
- [ ] Links/URLs to the theory proof or discussion articles/blogs. <links/URLs here>
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<!-- ==== 🆕 Remove this line WHEN AND ONLY WHEN you're adding a new feature, follow the checklist 👇 ====
### <Feature description>
- [ ] If this is non-trivial feature, paste the links/URLs to the design doc.
- [ ] Update the documentation to include this new feature.
- [ ] Tests(including UT, IT, E2E) are added to verify the new feature.
- [ ] If it's UI related, attach the screenshots below.
- [ ] I have rebuilt the `Configuration.md` documentation by running `make doc-gen`
     ==== 🆕 Remove this line WHEN AND ONLY WHEN you're adding a new feature, follow the checklist 👆 ==== -->

<!-- ==== 📱 Remove this line WHEN AND ONLY WHEN you're adding or modifying a plugin instrumentation, follow the checklist 👇 ====
### <Feature description>
- [ ] If adding a new plugin, add a component id in [the main repo](https://github.com/apache/skywalking/blob/master/oap-server/server-starter/src/main/resources/component-libraries.yml)
- [ ]  If adding a new plugin, add a logo in [the UI repo](https://github.com/apache/skywalking-booster-ui/tree/main/src/assets/img/technologies)
- [ ] I have added the library to `pyproject.toml` (plugin group) by running `poetry add library --group plugins`
- [ ] I have rebuilt the `Plugins.md` documentation by running `make doc-gen`
     ==== 📱 Remove this line WHEN AND ONLY WHEN you're adding a new feature, follow the checklist 👆 ==== -->

- [ ] If this pull request closes/resolves/fixes an existing issue, replace the issue url. Closes: <URL to main repo issue>
- [ ] Update the [`CHANGELOG.md`](https://github.com/apache/skywalking-python/blob/master/CHANGELOG.md).