Calculate line number correctly in multi-line strings

[nimrodkor]

• Please check if the PR fulfills these requirements

• [x] Tests for the changes have been added

• [ ] Docs have been added / updated

• [x] All CI checks are green

• What kind of change does this PR introduce?

This is a bugfix for a case where a multi-line yaml string has secrets in a line which is not the very first one.

• What is the current behavior?

Today, the error is pointed at the beginning of the string, even if the secret itself is in some row down the file.

• What is the new behavior (if this is a feature change)? It will point to the actual line with the secret in it

• Does this PR introduce a breaking change? No

• Other information: Already working on our (bridgecrewio) fork :)

[jpdakran]

Hi. Please merge master to your branch to re-run CI.

[lorenzodb1]

hi @nimrodkor 😄 could you please merge master into your branch?