chore(codespell): ignore CODE_OF_CONDUCT (#2044)

Several dictionaries suggest keeping the hyphen. In fact, it's generally
a good idea to hyphenate with too many adjacent vowels.

.codespellrc

@@ -1,6 +1,6 @@
 [codespell]
 # Ref: https://github.com/codespell-project/codespell#using-a-config-file
-skip = .git*,*.lock,.codespellrc
+skip = .git*,*.lock,.codespellrc,CODE_OF_CONDUCT.md
 check-hidden = true
 # ignore-regex = 
 ignore-words-list = crate,ratatui,inbetween