Add pipeline related requirements into the Gitlab MR template

.gitlab/merge_request_templates/Mixed Template.md

@@ -7,14 +7,16 @@ _This entire section can be deleted if all items are checked._
 * [ ] Enough information to help reviewers understand the issue, its root cause, impact, and the proposed solution
 * [ ] Enough information to help reviewers understand the feature, its functional description, example, documentation, test cases, test results, feature TODO list
 * [ ] The MR Title describes the change, including the component name, ie "lwip: Add support for IP over Pigeon"
-* [ ] All related links, including JIRA, backport, submoudule MR, are mentioned in the `Related` subsection
+* [ ] All related links, including JIRA, backport, submodule MR, are mentioned in the `Related` subsection.
 * [ ] Any GitHub issues are linked inside the git commit message and corresponding release notes
 * [ ] Add label for the area this MR is part of
 * [ ] I have checked if this is a breaking change. If it is, add notes to the `Breaking change notes` subsection below
 * [ ] Any necessary "needs backport" labels are added
 * [ ] For documentation updates label "needs translation: CN" (or EN) has been added, if the other language version still needs the update. Skip adding the label if the document is not yet translated.
 * [ ] Release note entry if this is a new public feature, or a fix for an issue introduced in the previous release.
-* [ ] The commit log is clean and ready to merge
+* [ ] The commit log is clean and ready to merge.
+* [ ] All relevant CI jobs have been run, i.e. jobs which cover the code changed by the MR.
+* [ ] Pipeline with Python 3 has been successfully run, i.e. `@bot ...; with Python3`, if the MR adds or changes Python code.
 
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