jam update buildpack action uses out of date jam version

[fg-j]

Currently, the update buildpack action uses jam 0.9.0. However, the latest is v0.11.0. The update includes a fix introduce in 0.10.1 that enables jam update builder to work when registry path != buildpackage ID.

There's an issue with that fix when used with private registries (see paketo-buildpacks/packit#175), so it might not make sense to upgrade the version yet, but it would be good to have a mechanism that keeps this jam version up to date.

[sophiewigmore]

Note that there exists an update-tools workflow that could possibly be used to keep the jam version in the actions up to date if we add a tools.json file like we have for the builder, implementation, and language family sub directories.

[sophiewigmore]

Update: the issue @fg-j mentioned (paketo-buildpacks/packit#175) has been resolved and the fix is available in packit v0.11.1, so we can safely update the version.