chmod 644 syncthing secret data

[pchico83]

Proposed changes

• Cannot be done using the mode because it does not work with fsGroup

[codecov]

Codecov Report

Merging #1158 (574eb04) into master (3133890) will increase coverage by 0.01%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #1158      +/-   ##
==========================================
+ Coverage   34.62%   34.64%   +0.01%     
==========================================
  Files          65       65              
  Lines        5400     5398       -2     
==========================================
  Hits         1870     1870              
+ Misses       3326     3324       -2     
  Partials      204      204              

Impacted Files	Coverage Δ
cmd/up/up.go	3.47% <0.00%> (+0.01%)	⬆️
pkg/model/dev.go	53.43% <ø> (ø)

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