Bump dart-lang/setup-dart from 1.7.1 to 1.7.2 (#29)

Author: dependabot[bot]

.github/workflows/dart.yml

@@ -23,7 +23,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           submodules: true
-      - uses: dart-lang/setup-dart@e51d8e571e22473a2ddebf0ef8a2123f0ab2c02c
+      - uses: dart-lang/setup-dart@65eb853c7ba17dde3be364c3d2858773e7144260
         with:
           sdk: ${{ matrix.sdk }}
       - name: Install dependencies