Bump github.com/buildpacks/libcnb from 1.27.0 to 1.28.0 (#1105)

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] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/BurntSushi/toml v1.2.1
 	github.com/Masterminds/semver/v3 v3.2.1
 	github.com/aws/aws-sdk-go v1.44.241
-	github.com/buildpacks/libcnb v1.27.0
+	github.com/buildpacks/libcnb v1.28.0
 	github.com/disiqueira/gotree v1.0.0
 	github.com/gocolly/colly v1.2.0
 	github.com/google/go-containerregistry v0.14.0

go.sum

@@ -30,8 +30,8 @@ github.com/antchfx/xpath v1.2.4/go.mod h1:i54GszH55fYfBmoZXapTHN8T8tkcHfRgLyVwwq
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/aws/aws-sdk-go v1.44.241 h1:D3KycZq3HjhmjYGzvTcmX/Ztf/KNmsfTmdDuKdnzZKo=
 github.com/aws/aws-sdk-go v1.44.241/go.mod h1:aVsgQcEevwlmQ7qHE9I3h+dtQgpqhFB+i8Phjh7fkwI=
-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/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=