⬆️ bump lscolors to v0.15.0 and msrv to 1.69.0

[zwpaper]

predicates v3 msrv is 1.69 in #938

---

TODO

• Use cargo fmt
• Add necessary tests
• Update default config/theme in README (if applicable)
• Update man page at lsd/doc/lsd.md (if applicable)

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[codecov-commenter]

Codecov Report

Merging #944 (fc2df4f) into master (59dc141) will increase coverage by 0.02%.
The diff coverage is n/a.

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@@            Coverage Diff             @@
##           master     #944      +/-   ##
==========================================
+ Coverage   85.74%   85.76%   +0.01%     
==========================================
  Files          51       51              
  Lines        5001     5001              
==========================================
+ Hits         4288     4289       +1     
+ Misses        713      712       -1     

Files	Coverage Δ
src/meta/mod.rs	55.07% <ø> (ø)
src/sort.rs	98.01% <ø> (ø)
tests/integration.rs	100.00% <ø> (ø)

... and 1 file with indirect coverage changes

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