build(deps): bump signal-hook from 0.3.18 to 0.4.1

[dependabot]

Bumps signal-hook from 0.3.18 to 0.4.1.

Changelog

Sourced from signal-hook's changelog.

0.4.1

• Don't pin specific dependency versions accidentally.

0.4.0

• Changed the low_level::pipe to look OwnedFd instead of IntoRawFd, to enforce ownership of the file descriptor (#196).

signal-hook-registry-1.4.8

• Restore errno on signal handler exit (#194, #191).

signal-hook-registry-1.4.7

• Using earlier monopolization to reduce binary size (#190).

signal-hook-mio-0.2.5

• Allow mio 1.1

signal-hook-registry-1.4.6

• Reword/improve the safety requirements docs for register (#178).

signal-hook-1.3.18

• Release the special-case removal of AIX for top-level signal-hook too (#169, #176).

signal-hook-async-std-0.3.0

• Bump async-std to 0.2 (#172).

signal-hook-registry-1.4.5

• Fix windows build (#174).

signal-hook-registry-1.4.4

• Get rid of a warning.

signal-hook-registry-1.4.3

• Remove special-case for AIX (#169).

signal-hook-mio-0.2.4

• Support for mio 1.0

... (truncated)

Commits

• 85f8c75 Version 0.4.1 (don't pin dep versions)
• 6e44722 Version bump to 0.4.0
• 80cc0cf Update dependencies
• 2f67df6 Fix some links & link tests
• bbcecf8 Adjust tests for higher minimal rust version
• 09d1e08 I/O safety
• 115d998 Simplify tests
• 4d5fd6a Version registry 1.4.8
• e04514e Merge pull request #194 from hanna-kruppe/save-restore-errno
• 2f3c6e4 save and restore errno
• Additional commits viewable in compare view

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.32%. Comparing base (2458019) to head (9b0f8a3).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #229   +/-   ##
=======================================
  Coverage   82.32%   82.32%           
=======================================
  Files          22       22           
  Lines        1279     1279           
=======================================
  Hits         1053     1053           
  Misses        226      226           

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