build(deps): bump github.com/bep/imagemeta from 0.8.3 to 0.8.4

Bumps [github.com/bep/imagemeta](https://github.com/bep/imagemeta) from 0.8.3 to 0.8.4.
- [Release notes](https://github.com/bep/imagemeta/releases)
- [Commits](bep/imagemeta@v0.8.3...v0.8.4)

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

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

Author: dependabot[bot]

go.mod

@@ -14,7 +14,7 @@ require (
 	github.com/bep/golibsass v1.2.0
 	github.com/bep/gowebp v0.3.0
 	github.com/bep/helpers v0.5.0
-	github.com/bep/imagemeta v0.8.3
+	github.com/bep/imagemeta v0.8.4
 	github.com/bep/lazycache v0.7.0
 	github.com/bep/logg v0.4.0
 	github.com/bep/mclib v1.20400.20402

go.sum

@@ -137,8 +137,8 @@ github.com/bep/gowebp v0.3.0 h1:MhmMrcf88pUY7/PsEhMgEP0T6fDUnRTMpN8OclDrbrY=
 github.com/bep/gowebp v0.3.0/go.mod h1:ZhFodwdiFp8ehGJpF4LdPl6unxZm9lLFjxD3z2h2AgI=
 github.com/bep/helpers v0.5.0 h1:rneezhnG7GzLFlsEWO/EnleaBRuluBDGFimalO6Y50o=
 github.com/bep/helpers v0.5.0/go.mod h1:dSqCzIvHbzsk5YOesp1M7sKAq5xUcvANsRoKdawxH4Q=
-github.com/bep/imagemeta v0.8.3 h1:68XqpYXjWW9mFjdGurutDmAKBJa9y2aknEBHwY/+3zw=
-github.com/bep/imagemeta v0.8.3/go.mod h1:5piPAq5Qomh07m/dPPCLN3mDJyFusvUG7VwdRD/vX0s=
+github.com/bep/imagemeta v0.8.4 h1:hA2liDZ4a3BINdsg4dD7kyR3MXNqw8Z00U3znCvtH3M=
+github.com/bep/imagemeta v0.8.4/go.mod h1:5piPAq5Qomh07m/dPPCLN3mDJyFusvUG7VwdRD/vX0s=
 github.com/bep/lazycache v0.7.0 h1:VM257SkkjcR9z55eslXTkUIX8QMNKoqQRNKV/4xIkCY=
 github.com/bep/lazycache v0.7.0/go.mod h1:NmRm7Dexh3pmR1EignYR8PjO2cWybFQ68+QgY3VMCSc=
 github.com/bep/logg v0.4.0 h1:luAo5mO4ZkhA5M1iDVDqDqnBBnlHjmtZF6VAyTp+nCQ=