chore(deps): bump codecov/codecov-action from 5 to 6 in /.github/actions/dart_package in the gh-deps group across 1 directory (#3687)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/actions/dart_package/action.yaml

@@ -81,7 +81,7 @@ runs:
       run: echo "package_name=${PACKAGE_PATH##*/}" >> $GITHUB_OUTPUT
 
     - name: 📊 Upload Coverage
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       with:
         flags: ${{ steps.split.outputs.package_name }}
         token: ${{ inputs.codecov_token }}