Fix the --browser option

[Stannislav]

Description

The problem was that webbrowser.open expects a URI and doesn't
work with relative local paths.

Solution: use pathlib to convert reporter.output_path to a URI
using pathlib.Path(reporter.output_path).resolve().as_uri().

Motivation behind this PR?

See #503

What type of change is this?

Bug fix.

Checklist

• I have added a changelog entry / my PR does not need a new changelog entry. Instructions.
• I have added/updated unit tests. Instructions.
• New and existing unit tests pass locally with my changes. Instructions
• I have self-documented code my changes by adding docstring(s) and comment(s). Instructions
• Current PR does not significantly decrease the code coverage and docstring coverage.
• My code follows the style guidelines of this project.
• I have run ScanAPI locally and manually tested my changes. Instructions.
• I have squashed my commits. Instructions.

Issue

Closes #503

[github-actions]

@Stannislav your pull request is missing a changelog!

[camilamaia]

@Stannislav it works for me on macOS ⭐️ thanks for the fix!

Just one detail, would you mind adding a changelog entry, please?

@Stannislav your pull request is missing a changelog!

[Pradhvan]

@camilamaia great! I could not test this since I am on Linux. I did leave a text on the contribution channel on discord for anyone who can test this out.

[Pradhvan]

LGTM ⭐

@Stannislav the PR just needs a changelog entry. Rest is good to go. 🚀

[codecov-commenter]

Codecov Report

Merging #504 (7827ef4) into main (f304230) will not change coverage.
The diff coverage is 75.00%.

@@           Coverage Diff           @@
##             main     #504   +/-   ##
=======================================
  Coverage   96.94%   96.94%           
=======================================
  Files          22       22           
  Lines         720      720           
=======================================
  Hits          698      698           
  Misses         22       22           

Impacted Files	Coverage Δ
scanapi/reporter.py	88.88% <75.00%> (ø)

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[camilamaia]

🌟

[Stannislav]

@camilamaia @Pradhvan changelog updated in 7827ef4

For some reason I thought the bug was introduced in the same version :)