Bump github.com/buildpacks/libcnb from 1.27.0 to 1.28.0 (#278)

Bumps [github.com/buildpacks/libcnb](https://github.com/buildpacks/libcnb) from 1.27.0 to 1.28.0.
- [Release notes](https://github.com/buildpacks/libcnb/releases)
- [Commits](buildpacks/libcnb@v1.27.0...v1.28.0)

---
updated-dependencies:
- dependency-name: github.com/buildpacks/libcnb
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -4,7 +4,7 @@ go 1.18
 
 require (
 	github.com/Masterminds/semver/v3 v3.2.1
-	github.com/buildpacks/libcnb v1.27.0
+	github.com/buildpacks/libcnb v1.28.0
 	github.com/heroku/color v0.0.6
 	github.com/magiconair/properties v1.8.7
 	github.com/mattn/go-shellwords v1.0.12

go.sum

@@ -2,8 +2,8 @@ github.com/BurntSushi/toml v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak
 github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/Masterminds/semver/v3 v3.2.1 h1:RN9w6+7QoMeJVGyfmbcgs28Br8cvmnucEXnY0rYXWg0=
 github.com/Masterminds/semver/v3 v3.2.1/go.mod h1:qvl/7zhW3nngYb5+80sSMF+FG2BjYrf8m9wsX0PNOMQ=
-github.com/buildpacks/libcnb v1.27.0 h1:Jwp5EDGJWYBLPn902w/648w3S+H2HL7/Xw8FLcrXgAo=
-github.com/buildpacks/libcnb v1.27.0/go.mod h1:SZirCtDl+AiFHTS6R4KlUPMqWzjwmEACsz/c2wI1nb8=
+github.com/buildpacks/libcnb v1.28.0 h1:iWK1tPKinlcXZaepTSCO9m/7uBevv12ERs4vZBwrSbY=
+github.com/buildpacks/libcnb v1.28.0/go.mod h1:Q57o6hD2cLhfQbmFgFbweqFz/MeSvoxlImjERQG5ugk=
 github.com/creack/pty v1.1.18 h1:n56/Zwd5o6whRC5PMGretI4IdRLlmBXYNjScPaBgsbY=
 github.com/creack/pty v1.1.18/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=