Bump swift-actions/setup-swift from 1.25.0 to 1.26.0

Bumps [swift-actions/setup-swift](https://github.com/swift-actions/setup-swift) from 1.25.0 to 1.26.0.
- [Release notes](https://github.com/swift-actions/setup-swift/releases)
- [Commits](swift-actions/setup-swift@v1.25.0...v1.26.0)

---
updated-dependencies:
- dependency-name: swift-actions/setup-swift
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/tests.yml

@@ -22,7 +22,7 @@ jobs:
       INPUT_OUTPUT: docs
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: swift-actions/setup-swift@v1.25.0
+      - uses: swift-actions/setup-swift@v1.26.0
         with:
           swift-version: '5'
       - uses: actions/checkout@v4