chore(deps): update dependency shfmt to v3.13.1

[renovate]

This PR contains the following updates:

Package	Update	Change
shfmt	patch	3.13.0 → 3.13.1

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Release Notes

mvdan/sh (shfmt)

v3.13.1

Compare Source

• cmd/shfmt
  • Add support for [[zsh]] in EditorConfig files
  • Detect the shell variant from filenames like .zshrc and .bash_profile
  • Fix --apply-ignore when used with explicit args - #​1310
• syntax
  • Revert an accidental change to how array subscripts are formatted - #​1314
  • Never join ;; with the previous line when formatting - #​1289
  • Fix a bug where $1[foo] was parsed as a subscript in Zsh - #​1288
  • Correctly parse $! in double quotes in Zsh - #​1298
  • Allow indexing into special parameters in Zsh - #​1299
  • Allow parameter expansions with empty names in Zsh - #​1280
• interp
  • Test against Bash 5.3 and fix three new discrepancies
  • Fix a few bugs related to nameref variables
  • Avoid panics when user input encounters unimplemented features

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