Also pass previously mentioned env variable to build server

Signed-off-by: Deukhoofd <Deukhoofd@gmail.com>

.drone.yml

@@ -43,6 +43,8 @@ steps:
     volumes:
       - name: conan-data
         path: /root/.conan/data
+    environment:
+      CONAN_ENV_COMPILER_VERSION: 10.2
     commands:
       - conan remote add epsilon-public https://packages.p-epsilon.com/
       - update-alternatives --set i686-w64-mingw32-gcc /usr/bin/i686-w64-mingw32-gcc-posix