Merge pull request juju#17939 from hpidcock/update-charm-v12

juju#17939

Updates juju/charm/v12 to v12.1.1 to include fix for charm upgrade without leaving old directories.

juju/charm#435

## QA steps

```
# bootstrap lxd and add a model
$ juju deploy github-runner --revision 130 --channel latest/stable
# wait for deploy and charm to get blocked
$ juju refresh github-runner --revision 131
# wait for upgrade
$ juju ssh 0
ubuntu@juju-32b4eb-0:/var/lib/juju/agents/unit-github-runner-0/charm/venv$ ls | grep openstacksdk
openstacksdk-3.0.0.dist-info
# there should only be one directory with the prefix openstacksdk
```

## Documentation changes

N/A

## Links

**Launchpad bug:** https://bugs.launchpad.net/juju/+bug/2058335

**Jira card:** JUJU-

go.mod

@@ -43,7 +43,7 @@ require (
 	github.com/im7mortal/kmutex v1.0.1
 	github.com/juju/ansiterm v1.0.0
 	github.com/juju/blobstore/v3 v3.0.2
-	github.com/juju/charm/v12 v12.0.2
+	github.com/juju/charm/v12 v12.1.1
 	github.com/juju/clock v1.1.1
 	github.com/juju/cmd/v3 v3.0.16
 	github.com/juju/collections v1.0.4

go.sum

@@ -468,8 +468,8 @@ github.com/juju/ansiterm v1.0.0 h1:gmMvnZRq7JZJx6jkfSq9/+2LMrVEwGwt7UR6G+lmDEg=
 github.com/juju/ansiterm v1.0.0/go.mod h1:PyXUpnI3olx3bsPcHt98FGPX/KCFZ1Fi+hw1XLI6384=
 github.com/juju/blobstore/v3 v3.0.2 h1:roZ4YBuZYmWId6y/6ZLQSAMmNlHOclHD8PQAMOQer6E=
 github.com/juju/blobstore/v3 v3.0.2/go.mod h1:NXEgMhrVH5744/zLfSkzsySlDQUpCgzvcNxjJJhICko=
-github.com/juju/charm/v12 v12.0.2 h1:0UqIAAb4csYF0bGasGcmmIhq/bJUWfGU5+o3XFziWlY=
-github.com/juju/charm/v12 v12.0.2/go.mod h1:QRuKxXC5zzfPlAa8ipmxX1tvpbIBliueLVHGbs3T7wU=
+github.com/juju/charm/v12 v12.1.1 h1:ar9IyY1ElOoP9TOo1wTsiMrBmCfUwbjDFde7T48lhik=
+github.com/juju/charm/v12 v12.1.1/go.mod h1:QRuKxXC5zzfPlAa8ipmxX1tvpbIBliueLVHGbs3T7wU=
 github.com/juju/clock v0.0.0-20190205081909-9c5c9712527c/go.mod h1:nD0vlnrUjcjJhqN5WuCWZyzfd5AHZAC9/ajvbSx69xA=
 github.com/juju/clock v0.0.0-20220202072423-1b0f830854c4/go.mod h1:zDZCPSgCJQINeZtQwHx2/cFk4seaBC8Yiqe8V82xiP0=
 github.com/juju/clock v0.0.0-20220203021603-d9deb868a28a/go.mod h1:GZ/FY8Cqw3KHG6DwRVPUKbSPTAwyrU28xFi5cqZnLsc=