Prepare v0.48.1 release (#1111)

Update changelog and version number for v0.48.1 release

Signed-off-by: Nico Burns <nico@nicoburns.com>

Prepare v0.48 release (#1105)

Update version numbers and changelog for v0.48.0 release

Signed-off-by: Nico Burns <nico@nicoburns.com>

Update Ubuntu version in tagged release action (#909)

Release 0.45.0

Version bump.

Version bump.

Bump dependencies.

Version bump.