Bump haskell-actions/run-ormolu from 14 to 15

Bumps [haskell-actions/run-ormolu](https://github.com/haskell-actions/run-ormolu) from 14 to 15.
- [Release notes](https://github.com/haskell-actions/run-ormolu/releases)
- [Changelog](https://github.com/haskell-actions/run-ormolu/blob/master/CHANGELOG.md)
- [Commits](haskell-actions/run-ormolu@v14...v15)

---
updated-dependencies:
- dependency-name: haskell-actions/run-ormolu
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/workflow.yaml

@@ -158,7 +158,7 @@
           "uses": "actions/checkout@v4"
         },
         {
-          "uses": "haskell-actions/run-ormolu@v14"
+          "uses": "haskell-actions/run-ormolu@v15"
         }
       ]
     },