ci(release): drop stray -- when forwarding --release-as to pnpm script (#96)

pnpm 7+ passes any args after a script name directly to the script, so
`pnpm release -- --release-as minor` forwards the literal `--` as an
argument to commit-and-tag-version, which silently ignores it and falls
back to an auto bump. On pre-1.0 versions that auto bump is conservative
(feat = patch), so requesting `minor` produced 0.5.0 → 0.5.1 instead of
0.6.0. Drop the `--`.

Co-authored-by: Paul Mulligan <paul@pmds.pull-list.net>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: 3 people

.github/workflows/release.yml

@@ -49,7 +49,7 @@ jobs:
           if [ "${{ inputs.release_type }}" = "auto" ]; then
             pnpm release
           else
-            pnpm release -- --release-as ${{ inputs.release_type }}
+            pnpm release --release-as ${{ inputs.release_type }}
           fi
 
           # Extract the new version from package.json