fix: Update kurono avatar

[KamilPawel]

Description

How Has This Been Tested?

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have linked this PR to a ZenHub Issue.

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This change is 

[faucomte97]

Reviewed 2 of 2 files at r2, 1 of 1 files at r3, all commit messages.
Reviewable status: all files reviewed, 3 unresolved discussions (waiting on @KamilPawel)

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aimmo/static/babylon/models/avatar_marker_model_new.babylon line 0 at r3 (raw file):
Could we simply overwrite the old file instead of creating a new file called _new?

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aimmo/static/babylon/models/avatar_marker_texture.png line 0 at r3 (raw file):
Can this be compressed so it takes less space?

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game_frontend/src/babylon/entities/avatarManager.ts line 148 at r3 (raw file):

    keyFrames.push({
      frame: 0,
      value: 17,

Can MARKER_HEIGHT be used here instead of the direct number? Same goes for the 2 other key frames below

[faucomte97]

Reviewed 4 of 4 files at r4, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @KamilPawel)

[faucomte97]

Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @KamilPawel)

[codecov]

Codecov Report

Merging #1749 (ba7e79f) into master (739daf0) will increase coverage by 21.79%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #1749       +/-   ##
===========================================
+ Coverage   66.15%   87.95%   +21.79%     
===========================================
  Files         178       38      -140     
  Lines        3667     1046     -2621     
  Branches      255      109      -146     
===========================================
- Hits         2426      920     -1506     
+ Misses       1209      103     -1106     
+ Partials       32       23        -9     

see 142 files with indirect coverage changes