feat: Bump github.com/aws/aws-sdk-go from 1.51.17 to 1.51.21

Bumps [github.com/aws/aws-sdk-go](https://github.com/aws/aws-sdk-go) from 1.51.17 to 1.51.21.
- [Release notes](https://github.com/aws/aws-sdk-go/releases)
- [Commits](aws/aws-sdk-go@v1.51.17...v1.51.21)

---
updated-dependencies:
- dependency-name: github.com/aws/aws-sdk-go
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -3,7 +3,7 @@ module github.com/anchore/harbor-scanner-adapter
 go 1.21.0
 
 require (
-	github.com/aws/aws-sdk-go v1.51.17
+	github.com/aws/aws-sdk-go v1.51.21
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da
 	github.com/gorilla/mux v1.8.1
 	github.com/parnurzeal/gorequest v0.2.16

go.sum

@@ -1,5 +1,5 @@
-github.com/aws/aws-sdk-go v1.51.17 h1:Cfa40lCdjv9OxC3X1Ks3a6O1Tu3gOANSyKHOSw/zuWU=
-github.com/aws/aws-sdk-go v1.51.17/go.mod h1:LF8svs817+Nz+DmiMQKTO3ubZ/6IaTpq3TjupRn3Eqk=
+github.com/aws/aws-sdk-go v1.51.21 h1:UrT6JC9R9PkYYXDZBV0qDKTualMr+bfK2eboTknMgbs=
+github.com/aws/aws-sdk-go v1.51.21/go.mod h1:LF8svs817+Nz+DmiMQKTO3ubZ/6IaTpq3TjupRn3Eqk=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=