Bump scipy from 1.1.0 to 1.2.0

Bumps [scipy](https://github.com/scipy/scipy) from 1.1.0 to 1.2.0.
- [Release notes](https://github.com/scipy/scipy/releases)
- [Commits](scipy/scipy@v1.1.0...v1.2.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

setup.py

@@ -4,7 +4,7 @@
 setup(
     name='autokeras',
     packages=find_packages(exclude=('tests',)),
-    install_requires=['scipy==1.1.0',
+    install_requires=['scipy==1.2.0',
                       'torch==0.4.1',
                       'torchvision==0.2.1',
                       'numpy==1.15.4',