build(deps): Bump external/glfw from 21fea01 to e7ea71b

Bumps [external/glfw](https://github.com/glfw/glfw) from `21fea01` to `e7ea71b`.
- [Release notes](https://github.com/glfw/glfw/releases)
- [Commits](glfw/glfw@21fea01...e7ea71b)

---
updated-dependencies:
- dependency-name: external/glfw
  dependency-type: direct:production
...

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