chore(deps): update dependency shfmt to v3.8.0

[renovate]

This PR contains the following updates:

Package	Update	Change
shfmt	minor	3.7.0 -> 3.8.0

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Release Notes

mvdan/sh (shfmt)

v3.8.0

Compare Source

This release drops support for Go 1.19 and 1.20 and includes many
features and bugfixes, such as improving EditorConfig support in shfmt.

• cmd/shfmt
  • Support EditorConfig language sections such as [[shell]] - #​664
  • Add --apply-ignore for tools and editors - #​1037
• syntax
  • Allow formatting redirects before all command argumetnts - #​942
  • Support brace expansions with uppercase letters - #​1042
  • Unescape backquotes in single quotes within backquotes - #​1041
  • Better error when using function in POSIX mode - #​993
  • Better column numbers for escapes inside backquotes - #​1028
• interp
  • Support parentheses in classic test commands - #​1036
  • Determine access to a directory via unix.Access - #​1033
  • Support subshells with FuncEnviron as Env - #​1043
  • Add support for fs.DirEntry via ReadDirHandler2
• expand
  • Add support for fs.DirEntry via ReadDir2
  • Support zero-padding in brace expansions - #​1042

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