Specify to not use boost static libs via command line in ci

.ci/script.sh

@@ -38,7 +38,8 @@ cmake --build .deps
 # Build nheko
 cmake -GNinja -H. -Bbuild \
     -DCMAKE_BUILD_TYPE=RelWithDebInfo \
-    -DCMAKE_INSTALL_PREFIX=.deps/usr
+    -DCMAKE_INSTALL_PREFIX=.deps/usr \
+    -DBUILD_SHARED_LIBS=ON # weird workaround, as the boost 1.70 cmake files seem to be broken?
 cmake --build build
 
 if [ "$TRAVIS_OS_NAME" = "osx" ]; then