fix(upnp): support newer miniupnpc library

[ReenigneArcher]

Description

Fixes incompatibilities with newer version of miniupnpc library.

Screenshot

Issues Fixed or Closed

• Closes fix(upnp): Support miniupnpc API version 18 (release 2.2.8) #2746
• Fixes Sunshine build fails from AUR on upnp.cpp.o #2775

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Dependency update (updates to dependencies)
• Documentation update (changes to documentation)
• Repository update (changes to repository files, e.g. .github/...)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

Branch Updates

LizardByte requires that branches be up-to-date before merging. This means that after any PR is merged, this branch
must be updated before it can be merged. You must also
Allow edits from maintainers.

• I want maintainers to keep my branch updated

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Project coverage is 8.99%. Comparing base (90fd371) to head (f39b8df).
Report is 136 commits behind head on master.

Files with missing lines	Patch %	Lines
src/upnp.cpp	0.00%	2 Missing and 2 partials ⚠️
src/upnp.h	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           master   #2782      +/-   ##
=========================================
+ Coverage    8.95%   8.99%   +0.03%     
=========================================
  Files          94      95       +1     
  Lines       17383   17385       +2     
  Branches     8267    8268       +1     
=========================================
+ Hits         1557    1564       +7     
+ Misses      12962   12957       -5     
  Partials     2864    2864              

Flag	Coverage Δ
Linux	6.85% <0.00%> (+0.06%)	⬆️
Windows	4.16% <0.00%> (-0.01%)	⬇️
macOS-12	10.01% <0.00%> (-0.02%)	⬇️
macOS-13	9.92% <0.00%> (-0.01%)	⬇️
macOS-14	10.22% <0.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/upnp.h	0.00% <0.00%> (ø)
src/upnp.cpp	3.01% <0.00%> (ø)

... and 2 files with indirect coverage changes