s/utf-8/urf-8 on manual config profile download

[iansltx]

Checklist for submitter

If some of the following don't apply, delete the relevant line.

• Changes file added for user-visible changes in changes/, orbit/changes/ or ee/fleetd-chrome/changes.
  See Changes files for more information.
• Manual QA for all new/changed functionality

[codecov]

Codecov Report

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

Project coverage is 53.76%. Comparing base (4d6a81c) to head (ca90190).
Report is 11 commits behind head on main.

Files with missing lines	Patch %	Lines
server/service/devices.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #23169      +/-   ##
==========================================
- Coverage   63.35%   53.76%   -9.59%     
==========================================
  Files        1534     1536       +2     
  Lines      144266   144438     +172     
  Branches     3623     3623              
==========================================
- Hits        91395    77664   -13731     
- Misses      45660    60414   +14754     
+ Partials     7211     6360     -851     

Flag	Coverage Δ
backend	53.80% <0.00%> (-10.46%)	⬇️

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