Release 1.5.2

Includes a fix for CVE-2021-41190 / GHSA-77vh-xpmg-72qh .

- use fedora:latest in contrib/skopeoimage/*/Dockerfile
- Fix test bug that prevented useful diagnostics on registry fail
- proxy: Add an API to fetch the config upconverted to OCI
- proxy: Add support for manifest lists
- proxy: Uncapitalize all errors
- Cirrus: Bump Fedora to release 35 & Ubuntu to 21.10
- Update to c/image v5.17.0

Signed-off-by: Miloslav Trmač <[email protected]>

Author: mtrmac

version/version.go

@@ -1,4 +1,4 @@
 package version
 
 // Version is the version of the build.
-const Version = "1.5.2-dev"
+const Version = "1.5.2"