[BUG] Adding a new benchmark causes a `split` undefined error

[FrancisMurillo]

Description

Impacted PR: dotenv-linter/dotenv-linter#395

Given an existing benchmark exists, adding a new benchmark function causes an undefined JS error. Output taken from this run:

roup                    changes                                master
-----                    -------                                ------
dotenv_linter check      1.05     65.1±3.38µs        ? ?/sec    1.00     62.2±3.41µs        ? ?/sec
dotenv_linter compare    1.00     27.2±1.46µs        ? ?/sec  
TypeError: Cannot read property 'split' of undefined
    at /home/runner/work/_actions/boa-dev/criterion-compare-action/v2.0.0/dist/index.js:1:46988
    at Array.map (<anonymous>)
    at convertToMarkdown (/home/runner/work/_actions/boa-dev/criterion-compare-action/v2.0.0/dist/index.js:1:46732)
    at main (/home/runner/work/_actions/boa-dev/criterion-compare-action/v2.0.0/dist/index.js:1:46106)
    at async /home/runner/work/_actions/boa-dev/criterion-compare-action/v2.0.0/dist/index.js:1:47904
Error: Unhanded error:
TypeError: Cannot read property 'split' of undefined

Investigating the code and results, I believe the issue is that the output has trailing spaces breaking the undefined checks. A simple .trimRight at this line could fix the issue:

// ORIGINAL
let resultLines = results.split("\n");
// NEW
let resultLines = results.trimRight().split("\n");

Will file a PR for this fix.