go.mod: github.com/fsnotify/fsnotify v1.5.1

full diff: https://github.com/fsnotify/fsnotify/compare/v1.4.9...v1.5.1

Relevant changes:

- Fix unsafe pointer conversion
- Drop support/testing for Go 1.11 and earlier
- Update x/sys to latest
- add //go:build lines
- add go 1.17 to test matrix

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/fsnotify/fsnotify/.mailmap

@@ -0,0 +1,2 @@
+Chris Howey <howeyc@gmail.com> <chris@howey.me>
+Nathan Youngman <git@nathany.com> <4566+nathany@users.noreply.github.com>