Increase upload_size_limit to 5GB

[maxschmeling]

Description

A minor tweak to make 5GB the default upload_size_limit instead of 1GB. This is a more reasonable modern limit.

Changelog Description

Update default upload size limit

We updated the default upload_size_limit from 1 GB to 5 GB.

Pre-review checklist

Please make sure the items below have been covered before requesting a review:

• This change works and has been tested locally (or has an appropriate fallback).
• This change works and has been tested on a Go sandbox.
• This change has relevant unit tests (if applicable).
• This change uses a rollout method to ease with deployment (if applicable - especially for large scale actions that require writes).
• This change has relevant documentation additions / updates (if applicable).
• I've created a changelog description that aligns with the provided examples.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 28.96%. Comparing base (22cb27c) to head (977ee59).

Files	Patch %	Lines
a8c-files.php	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #5382      +/-   ##
=============================================
- Coverage      29.03%   28.96%   -0.07%     
  Complexity      4823     4823              
=============================================
  Files            283      283              
  Lines          20952    20940      -12     
=============================================
- Hits            6084     6066      -18     
- Misses         14868    14874       +6     

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