subproject: boost-url & boost: update revision

Update the revision of boost-url to
d740a92d38e3a8f4d5b2153f53b82f1c98e312ab as per
https://github.com/openbmc/openbmc/blob/595f63084d313c9708cb435470e6c6dcbbbbe646/meta-openembedded/meta-oe/recipes-devtools/boost-url/boost-url_git.bb

Update the release version of boost to 1.78.0, as per
https://github.com/openbmc/openbmc/blob/595f63084d313c9708cb435470e6c6dcbbbbe646/poky/meta/recipes-support/boost/boost_1.78.0.bb
and
https://github.com/openbmc/openbmc-build-scripts/blob/ca8c4a8b9728714c9a07f7940a4d31b89c3ecf9f/scripts/build-unit-test-docker#L94



This is neccessary since the current bmcweb HEAD doesn't compile with
the specified boost-url. This failure can be verified by cloning the
repo on an x86 unix desktop without boost-url and let meson clone
subprojects.

Tested:
1. it compiled on an x86 unix desktop without boost-url and boost
2. yocto build also worked with this patch in

Signed-off-by: Nan Zhou <nanzhoumails@gmail.com>
Change-Id: Ib8356667b3fb74ae87c8bf32d21cd834ef061a47