fix: migrate release scripts from qqjs to script-exec helpers

[michaelmalave]

Summary

Removes a release-time regression by migrating the remaining qqjs-based scripts to the shared script-exec helpers, aligning release automation with the repo’s execa migration. This scope is limited to packaging/upload scripts used by prerelease/release flows.

• Migrate scripts/upload/deb from qqjs to run/x/shell in scripts/utils/script-exec.js
• Migrate scripts/release/win from qqjs to run/x/shell in scripts/utils/script-exec.js
• Remove legacy qqjs execution calls and switch to argument-safe x('./node_modules/.bin/oclif', [...]) usage
• Fix prerelease packaging failure in pack-upload / upload-deb-and-tarballs caused by missing qqjs at runtime

Type of Change

• fix: Bug fix or issue (patch semvar update)
• feat: Introduces a new feature to the codebase (minor semvar update)
• perf: Performance improvement
• docs: Documentation only changes
• tests: Adding missing tests or correcting existing tests
• chore: Code cleanup tasks, dependency updates, or other changes

Verification

npm ci
npm run lint

# Optional targeted script smoke checks
node ./scripts/upload/deb
node ./scripts/release/win

# Full validation via CI path
# Trigger start-prerelease and confirm:
# create-prerelease / pack-upload / upload-deb-and-tarballs succeeds

Additional Context

• Root cause: scripts/upload/deb and scripts/release/win still imported qqjs after qqjs was removed in the execa migration commit.
• Risk: low; behavior is preserved while swapping execution helpers.
• Breaking: none.