fix(points): add stroke to "swap" icon

[bakoushin]

Description

The swap icon lost its stroke compared to one in figma. This fixes it.

Context: https://valora-app.slack.com/archives/C0684TXDR3K/p1720545011018399

Before fix	After fix	In Figma

Test plan

Visual assessment

Related issues

• Related to RET-1103

Backwards compatibility

Y

Network scalability

NA

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.70%. Comparing base (7dbe6ee) to head (85c9388).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5630      +/-   ##
==========================================
- Coverage   86.71%   86.70%   -0.01%     
==========================================
  Files         773      773              
  Lines       31567    31567              
  Branches     5456     5456              
==========================================
- Hits        27372    27371       -1     
- Misses       4150     4151       +1     
  Partials       45       45              

Files	Coverage Δ
src/icons/SwapArrows.tsx	100.00% <ø> (ø)

... and 1 file with indirect coverage changes

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