Release complete for v1.32.0

Co-authored-by: doriable <[email protected]>

We're now using these RPCs to power the BSR UI, which need to be able to
specify this field. Not currently adding it to the CLI calls, which will
continue to leave this unspecified (meaning the latest revision).

In CLI versions pre-1.32.0, for archive and git refs, we would map
the root of the bucket of archive and git refs to the `subDirPath`,
which is inconsistent with the behavior for dir refs (which maps
target paths and target exclude paths to the execution context).

In 1.32.0, we made changes to handle subDirPath, target paths,
and target exclude paths in a unified way, however this is not
backwards compatible with pre-1.32.0 versions. So, in order
to be backwards compatible, we need to remap the target
paths and target exclude paths.

I explored an option to check of the subDirPath contains
the target paths and target exclude paths before remapping,
however this is brittle, since we could hit an edge case with
directories that have the same name nested:

```
.
└── proto
    └── foo
        └── foo
```

Tests have been adjusted to reflect this change.

---------

Co-authored-by: Nick Snyder <[email protected]>
Co-authored-by: bufdev <[email protected]>

Add `module` config option to protoc plugins. With v2 config the plugins
only work if they find a module in the current directory. With this
change users can provide the module that they are running the plugin
against. Module accepts both the directory path and module full name.

---------

Co-authored-by: Edward McFarlane <[email protected]>

Release prepared for 1.32.1
Reminder: Verify the changelog

Co-authored-by: doriable <[email protected]>