errors related to controller-runtime v0.11 upgrade

[tchughesiv]

What did you do to encounter the bug?
run unit-test or vet in main branch

What did you expect?
successful tests

What happened instead?

$ make unit-test
go test -race -cover ./pkg/...
# sigs.k8s.io/json/internal/golang/encoding/json
../../go/pkg/mod/sigs.k8s.io/json@v0.0.0-20211020170558-c049b76a60c6/internal/golang/encoding/json/encode.go:1249:12: sf.IsExported undefined (type reflect.StructField has no field or method IsExported)
../../go/pkg/mod/sigs.k8s.io/json@v0.0.0-20211020170558-c049b76a60c6/internal/golang/encoding/json/encode.go:1255:18: sf.IsExported undefined (type reflect.StructField has no field or method IsExported)
FAIL	github.com/mongodb/mongodb-atlas-kubernetes/pkg/api/v1 [build failed]
?   	github.com/mongodb/mongodb-atlas-kubernetes/pkg/api/v1/project	[no test files]
?   	github.com/mongodb/mongodb-atlas-kubernetes/pkg/api/v1/provider	[no test files]
FAIL	github.com/mongodb/mongodb-atlas-kubernetes/pkg/controller/atlas [build failed]
FAIL	github.com/mongodb/mongodb-atlas-kubernetes/pkg/controller/atlascluster [build failed]
FAIL	github.com/mongodb/mongodb-atlas-kubernetes/pkg/controller/atlasdatabaseuser [build failed]

Additional context
appears to require go1.17
kubernetes-sigs/controller-tools#643
https://github.com/kubernetes-sigs/controller-runtime/blob/1f06556c918de094e1060e54bd73a2d70ba9b544/go.mod#L3