⬆️ Bump github.com/docker/distribution

Bumps [github.com/docker/distribution](https://github.com/docker/distribution) from 2.7.1+incompatible to 2.8.0+incompatible.
- [Release notes](https://github.com/docker/distribution/releases)
- [Commits](distribution/distribution@v2.7.1...v2.8.0)

---
updated-dependencies:
- dependency-name: github.com/docker/distribution
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -4,7 +4,7 @@ go 1.17
 
 require (
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751
-	github.com/docker/distribution v2.7.1+incompatible
+	github.com/docker/distribution v2.8.0+incompatible
 	github.com/ghodss/yaml v1.0.0
 	github.com/go-logr/logr v0.2.1
 	github.com/golang/protobuf v1.4.3

go.sum

@@ -151,8 +151,9 @@ github.com/dnaeon/go-vcr v1.0.1/go.mod h1:aBB1+wY4s93YsC3HHjMBMrwTj2R9FHDzUr9KyG
 github.com/docker/cli v0.0.0-20200130152716-5d0cf8839492 h1:FwssHbCDJD025h+BchanCwE1Q8fyMgqDr2mOQAWOLGw=
 github.com/docker/cli v0.0.0-20200130152716-5d0cf8839492/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
 github.com/docker/distribution v0.0.0-20191216044856-a8371794149d/go.mod h1:0+TTO4EOBfRPhZXAeF1Vu+W3hHZ8eLp8PgKVZlcvtFY=
-github.com/docker/distribution v2.7.1+incompatible h1:a5mlkVzth6W5A4fOsS3D2EO5BUmsJpcB+cRlLU7cSug=
 github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
+github.com/docker/distribution v2.8.0+incompatible h1:l9EaZDICImO1ngI+uTifW+ZYvvz7fKISBAKpg+MbWbY=
+github.com/docker/distribution v2.8.0+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
 github.com/docker/docker v0.7.3-0.20190327010347-be7ac8be2ae0/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/docker v1.4.2-0.20200203170920-46ec8731fbce h1:KXS1Jg+ddGcWA8e1N7cupxaHHZhit5rB9tfDU+mfjyY=
 github.com/docker/docker v1.4.2-0.20200203170920-46ec8731fbce/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=