Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to dcc72fc82c9e892a8cdb058b3f8dba138e9e4192
  - Upgrading package.py requirements

    Upgrading gitpython from 2.11.1 to 3.1.0 because of incompatiblity

    with actual version of gitdb2 (4.0.2)

    Issue-ID: OOM-2344

    Signed-off-by: Tomáš Levora <t.levora@partner.samsung.com>
    Change-Id: Ibde20ee7f842858cb26f3ed4b45cb0339093a59f

diff --git a/docs/submodules/oom/offline-installer.git b/docs/submodules/oom/offline-installer.git
index a2998d3..dcc72fc 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit a2998d3cd4aaa2eabe19f6191ed6253657f7d61a
+Subproject commit dcc72fc82c9e892a8cdb058b3f8dba138e9e4192