Bump fwilhe2/setup-kotlin from 1.5 to 1.6

Bumps [fwilhe2/setup-kotlin](https://github.com/fwilhe2/setup-kotlin) from 1.5 to 1.6.
- [Release notes](https://github.com/fwilhe2/setup-kotlin/releases)
- [Commits](fwilhe2/setup-kotlin@v1.5...v1.6)

---
updated-dependencies:
- dependency-name: fwilhe2/setup-kotlin
  dependency-version: '1.6'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: Setup Kotlin
-        uses: fwilhe2/setup-kotlin@v1.5
+        uses: fwilhe2/setup-kotlin@v1.6
       - name: run_tests
         run: ./run_tests.sh
   auto-merge: