Update to Boost 1.69.0 to attempt travis fix

CMakeLists.txt

@@ -106,7 +106,7 @@ set_package_properties(Boost PROPERTIES
     TYPE REQUIRED
 )
 
-add_library(matrix_client
+add_library(matrix_client SHARED
             lib/http/client.cpp
             lib/http/session.cpp
             lib/crypto/client.cpp

deps/CMakeLists.txt

@@ -40,9 +40,9 @@ if(USE_BUNDLED_BOOST)
 endif()
 
 set(BOOST_URL
-    https://dl.bintray.com/boostorg/release/1.68.0/source/boost_1_68_0.tar.bz2)
+    https://dl.bintray.com/boostorg/release/1.69.0/source/boost_1_69_0.tar.bz2)
 set(BOOST_SHA256
-    7f6130bc3cf65f56a618888ce9d5ea704fa10b462be126ad053e80e553d6d8b7)
+    8f32d4617390d1c2d16f26a27ab60d97807b35440d45891fa340fc2648b04406)
 
 set(GTEST_URL https://github.com/google/googletest/archive/release-1.8.0.tar.gz)
 set(GTEST_SHA1 e7e646a6204638fe8e87e165292b8dd9cd4c36ed)