Bump dart-lang/setup-dart from 1.6.4 to 1.6.5 (#720)

Author: dependabot[bot]

.github/workflows/dart.yml

@@ -19,7 +19,7 @@ jobs:
         sdk: [3.2.0, dev]
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
-      - uses: dart-lang/setup-dart@f0ead981b4d9a35b37f30d36160575d60931ec30
+      - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
         with:
           sdk: ${{ matrix.sdk }}
       - name: Report version
@@ -71,7 +71,7 @@ jobs:
             platform: chrome
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
-      - uses: dart-lang/setup-dart@f0ead981b4d9a35b37f30d36160575d60931ec30
+      - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
         with:
           sdk: ${{ matrix.sdk }}
       - name: Report version