Bump snapcore/action-build from 1 to 1.0.8

[dependabot]

Bumps snapcore/action-build from 1 to 1.0.8.

Release notes

Sourced from snapcore/action-build's releases.

v1.0.8

• Add a ua-token input parameter that can be used to set an Ubuntu Advantage token to pass to Snapcraft (#14). Once Ubuntu 16.04 goes into Extended Security Maintenance, a token will be required to build snaps against the old base core. More information can be found on the Snapcraft Blog.
• Upgrade dependencies

v1.0.7

• Revert change to action run URL in v1.0.6 release.

v1.0.6

• Add snapcraft-channel and snapcraft-args input parameters to make it easier to test out experimental Snapcraft features (#8).
• Upgrade dependencies

v1.0.5

• Fix compatibility with Github's ubuntu-20.04 runner image (#4).
• expand ~ to the CI user's home directory in the path input parameter (#5).

v1.0.4

• Don't run snapcraft with sudo, since Snapcraft 4.0 complains. We now add the CI user to the "lxd" group, and use sg to switch to that group membership.
• Upgrade dependencies.
• Update the action's own CI workflow to run builds against each supported base snap.

v1.0.3

• Update action dependency versions.
• Add support for passing SNAPCRAFT_BUILD_INFO=1 to Snapcraft, enabled by default. This is intended to include information about the build in the resulting snap to enable automated security vulnerability checking. Unfortunately it doesn't work correctly with LXD builds yet due to [bug #1871770](https://bugs.launchpad.net/snapcraft/+bug/1871770).

Commits

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