rebase: bump github.com/ceph/go-ceph from 0.11.0 to 0.12.0

Bumps [github.com/ceph/go-ceph](https://github.com/ceph/go-ceph) from 0.11.0 to 0.12.0.
- [Release notes](https://github.com/ceph/go-ceph/releases)
- [Changelog](https://github.com/ceph/go-ceph/blob/master/docs/release-process.md)
- [Commits](https://github.com/ceph/go-ceph/compare/v0.11.0...v0.12.0)

---
updated-dependencies:
- dependency-name: github.com/ceph/go-ceph
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

vendor/github.com/ceph/go-ceph/rados/ioctx.go

@@ -45,6 +45,8 @@ const (
 	CreateIdempotent = C.LIBRADOS_CREATE_IDEMPOTENT
 )
 
+//revive:disable:var-naming old-yet-exported public api
+
 // PoolStat represents Ceph pool statistics.
 type PoolStat struct {
 	// space used in bytes
@@ -69,6 +71,8 @@ type PoolStat struct {
 	Num_wr_kb            uint64
 }
 
+//revive:enable:var-naming
+
 // ObjectStat represents an object stat information
 type ObjectStat struct {
 	// current length in bytes