build(deps): Bump github.com/DeRuina/timberjack from 1.3.5 to 1.3.7

Bumps [github.com/DeRuina/timberjack](https://github.com/DeRuina/timberjack) from 1.3.5 to 1.3.7.
- [Release notes](https://github.com/DeRuina/timberjack/releases)
- [Changelog](https://github.com/DeRuina/timberjack/blob/main/CHANGELOG.md)
- [Commits](https://github.com/DeRuina/timberjack/compare/v1.3.5...v1.3.7)

---
updated-dependencies:
- dependency-name: github.com/DeRuina/timberjack
  dependency-version: 1.3.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -1,7 +1,7 @@
 module github.com/decke/smtprelay
 
 require (
-	github.com/DeRuina/timberjack v1.3.5
+	github.com/DeRuina/timberjack v1.3.7
 	github.com/chrj/smtpd v0.3.1
 	github.com/google/uuid v1.6.0
 	github.com/peterbourgon/ff/v3 v3.4.0
@@ -12,6 +12,7 @@ require (
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/klauspost/compress v1.17.11 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect