Bump libs/EXTERNAL/libezgl from fb0e6f0 to 9f7d15b

Bumps [libs/EXTERNAL/libezgl](https://github.com/verilog-to-routing/ezgl) from `fb0e6f0` to `9f7d15b`.
- [Release notes](https://github.com/verilog-to-routing/ezgl/releases)
- [Commits](verilog-to-routing/ezgl@fb0e6f0...9f7d15b)

---
updated-dependencies:
- dependency-name: libs/EXTERNAL/libezgl
  dependency-version: 9f7d15bcf9911523516c75d47298c71bae6264c2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]