Bump click to v8.4.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
click (changelog)	==8.4.1 → ==8.4.2

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Release Notes

pallets/click (click)

v8.4.2

Compare Source

Unreleased

• Fix Fish shell completion broken in 8.4.0 by {pr}3126. Newlines and
  tabs in option help text are now escaped, keeping the original completion
  format while still supporting multi-line help. {issue}3502
  {issue}3043 {pr}3504 {pr}3508
• Deprecated commands and options with empty or missing help text no longer
  render a stray leading space before the (DEPRECATED) label. {pr}3509
• A {class}Group with invoke_without_command=True marks its subcommand as
  optional in the usage help, showing [COMMAND] instead of COMMAND.
  {issue}3059 {pr}3507
• echo_via_pager flushes after each write, so passing a generator streams
  output to the pager incrementally instead of staying hidden until the pipe
  buffer fills. {issue}3242 {issue}2542 {pr}3534
• echo_via_pager and get_pager_file no longer close a borrowed stdout
  stream when no external pager runs, completing the partial
  I/O operation on closed file fix from {pr}3482. {issue}3449
  {pr}3533

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