Update default test command to cargo build

Because we are skipping tests on this non-standard ELF binary, we need
to test building instead.

Signed-off-by: Nathaniel McCallum <[email protected]>

Author: npmccallum

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
           override: true
       - uses: actions-rs/cargo@v1
         with:
-          command: test
+          command: build
           args: ${{ matrix.profile.flag }}
     strategy:
       fail-fast: false