Pin Vale to 3.14.2 to fix dicpath resolution regression

[rrrutledge]

Summary

The Spelling & Styles workflow has failed on every PR (and the monthly main schedule run) since 2026-06-15, with vale erroring unable to resolve dicpath on .github/vale/ISC/Spelling.yml — unrelated to any PR's content.

Root cause

vale-action@v2 defaults to version: latest. Vale 3.15.0 (released 2026-06-12) changed vale sync to create and use the configured StylesPath (.github/vale) instead of falling back to a global styles directory (vale-cli/vale#1106). That changed where the ISC package's nested styles/ISC/Spelling.yml and styles/dictionaries/ land once synced, breaking Spelling.yml's relative dicpath: dictionaries.

3.14.2 was the last Vale release before that sync change — pinning to it restores the working layout. The isc-styles package itself hasn't changed since 2025-08-28, so this is a Vale-version compatibility issue, not a content or package issue.

Fix

Pin vale-action's version input to 3.14.2 instead of floating on latest.

Longer-term

isc-styles' Spelling.yml/dicpath should eventually be restructured to work under the new (correct) sync behavior so we can move off the pin — filing that separately against isc-styles.

Test plan

• This PR's own Spelling & Styles check should now pass (self-verifying, since pull_request runs the workflow from this branch).

[rrrutledge]

Closing in favor of the real fix at the source: InnerSourceCommons/isc-styles#4. That removes the stray StylesPath line causing the dicpath failure, so every consumer (this repo, InnerSourceLearningPath, managing-innersource-projects) is fixed once it merges — no per-repo pin needed.