v0.1.8

fix(ci): heredoc commit message to keep the run: block scalar intact

The unindented lines inside the inline 'git commit -m "...multiline..."'
broke out of YAML's block scalar, which silently turned the 'on:'
trigger into a boolean alias (YAML 1.1 spec) and stopped tag pushes
from firing the release workflow. Write the message to a file and use
'git commit -F' instead.