testing/grcov: fix build with `abuild rootbld`

testing/grcov/APKBUILD

@@ -9,7 +9,7 @@ arch="x86_64 armv7 armhf aarch64 x86 ppc64le" # Limited by cargo
 license="MPL-2.0"
 depends="gcc" # gcov
 makedepends="cargo"
-options="!check" # Failing due to utf-8 (locale?)
+options="net !check" # Failing due to utf-8 (locale?)
 source="$pkgname-$pkgver.tar.gz::https://github.com/mozilla/grcov/archive/v$pkgver.tar.gz"
 
 build() {