build(deps): bump github.com/ldez/exptostd from 0.4.1 to 0.4.2

Bumps [github.com/ldez/exptostd](https://github.com/ldez/exptostd) from 0.4.1 to 0.4.2.
- [Commits](ldez/exptostd@v0.4.1...v0.4.2)

---
updated-dependencies:
- dependency-name: github.com/ldez/exptostd
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

go.mod

@@ -64,7 +64,7 @@ require (
 	github.com/kulti/thelper v0.6.3
 	github.com/kunwardeep/paralleltest v1.0.10
 	github.com/lasiar/canonicalheader v1.1.2
-	github.com/ldez/exptostd v0.4.1
+	github.com/ldez/exptostd v0.4.2
 	github.com/ldez/gomoddirectives v0.6.1
 	github.com/ldez/grignotin v0.9.0
 	github.com/ldez/tagliatelle v0.7.1