[externals] only build spirv-tools as static (#2680)

Upstream forcefully builds the shared lib and also builds shared and
static separately for... some reason. I made a PR that fixes that, so
for now let's use it here

should speed up build on Android and Windows

Signed-off-by: crueter <crueter@eden-emu.dev>

Reviewed-on: #2680
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>

.ci/android/build.sh

@@ -13,8 +13,8 @@ fi
 cd src/android
 chmod +x ./gradlew
 
-./gradlew assembleRelease
-./gradlew bundleRelease
+./gradlew assembleMainlineRelease
+./gradlew bundleMainlineRelease
 
 if [ ! -z "${ANDROID_KEYSTORE_B64}" ]; then
     rm "${ANDROID_KEYSTORE_FILE}"