Bump swift-actions/setup-swift from 2 to 3

Bumps [swift-actions/setup-swift](https://github.com/swift-actions/setup-swift) from 2 to 3.
- [Release notes](https://github.com/swift-actions/setup-swift/releases)
- [Commits](https://github.com/swift-actions/setup-swift/compare/v2...v3)

---
updated-dependencies:
- dependency-name: swift-actions/setup-swift
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/build.yml

@@ -499,7 +499,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v6
-    - uses: swift-actions/setup-swift@v2
+    - uses: swift-actions/setup-swift@v3
       with:
         swift-version: ${{ matrix.swift }}
     - name: Get swift version
@@ -523,7 +523,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
        - uses: actions/checkout@v6
-       - uses: swift-actions/setup-swift@v2
+       - uses: swift-actions/setup-swift@v3
          with:
            swift-version: 6.2.1
        - uses: bytecodealliance/actions/wasmtime/setup@v1