Bump dart-lang/setup-dart from 1.4.0 to 1.5.0

Bumps [dart-lang/setup-dart](https://github.com/dart-lang/setup-dart) from 1.4.0 to 1.5.0.
- [Release notes](https://github.com/dart-lang/setup-dart/releases)
- [Changelog](https://github.com/dart-lang/setup-dart/blob/main/CHANGELOG.md)
- [Commits](dart-lang/setup-dart@a57a6c0...d6a63da)

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

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

.github/workflows/test-package.yml

@@ -24,7 +24,7 @@ jobs:
         working-directory: wasm
     steps:
     - uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3
-    - uses: dart-lang/setup-dart@a57a6c04cf7d4840e88432aad6281d1e125f0d46
+    - uses: dart-lang/setup-dart@d6a63dab3335f427404425de0fbfed4686d93c4f
       with:
         sdk: ${{ matrix.sdk }}
     - uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -66,7 +66,7 @@ jobs:
       run:
         working-directory: wasm
     steps:
-    - uses: dart-lang/setup-dart@a57a6c04cf7d4840e88432aad6281d1e125f0d46
+    - uses: dart-lang/setup-dart@d6a63dab3335f427404425de0fbfed4686d93c4f
       with:
         sdk: ${{ matrix.sdk }}
     - uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3
@@ -90,7 +90,7 @@ jobs:
       run:
         working-directory: wasm
     steps:
-    - uses: dart-lang/setup-dart@a57a6c04cf7d4840e88432aad6281d1e125f0d46
+    - uses: dart-lang/setup-dart@d6a63dab3335f427404425de0fbfed4686d93c4f
       with:
         sdk: dev
     - uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3