GitHub action's Ubuntu 20.04 image has mysql8 tooling which is not
compatible with mariadb.

Why?
- Coveralls had login issues and we were not able to view files to find the actual uncovered lines
- Codecov has better reporting (status checks & commit diff coverage, ), UX (better folder/file navigation, faster page loads), and has more features.
- Codecov will not require additional step of
coverage wrap-up for parallel builds (it manages it internally somehow).

Issue: No PR number is detected on Push events and all builds are
skipped. We want the opposite to be true, so we're running all builds on
merges in hopes of testing better.

When same PR causes multiple CI triggers due to rapid addition of new
commits, this change will cancel previous CI jobs to save resources.

pls ;)

Simply because "too much effort" to add another library pfft

This reverts commit ead26527b7.

alt motive: Re-trigger GHAs that have been showing waiting for too
long ;)

* ci: ignore js only changes while running unittests

- IF PR only changes JS files then unittests / patch tests wont run.
- Change done to save resources / concurrent builds.

* ci: ignore md files in build

* Add "BREAKING CHANGE"

documentation ref: https://docs.cypress.io/guides/guides/command-line#cypress-run

Files that don't end with .py or .pyo ot .pyc are automatically
skipped by coveragepy. Updated omit list accordingly to remove non
python importable files.

ref: https://coverage.readthedocs.io/en/coverage-5.5/source.html#execution

* Generated v10 backup archive
    * used old v7 erpnext backup hosted via build.erpnext.com
    * upgraded to v10 frappe + erpnext
    * uninstalled and deleted erpnext related data
* Hosted backup on https://frappeframework.com/files/v10-frappe.sql.gz

separated JS and python rules for granuarilty.

Ignore matches with microtemplating that have this structure: `{{.*_.*}}` in string.

* ci: fix false positive rule for split js translate

- limit regex to must match end of line.
- expand previous check to take care of other ways to split multi-line
  calls.

* ci: update tests for rules, ignore rules in sider

* ci: enable semgrep on v13 branches

* ci: fix false positive for python split strings

- Also, update mergify rules

- Also, fix coverage & coveralls setup

- Install node 14 in CI

- fix style
- Handle global dependency