Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 3ac3c6aec5e551b36ad43aeff1279e6182141030
  - Merge "Removing python 2 reference in BuildGuide"
  - Removing python 2 reference in BuildGuide

    As python 2 support ends, removing its rereferences from buildguide

    Issue-ID: OOM-2345

    Signed-off-by: Tomáš Levora <t.levora@partner.samsung.com>
    Change-Id: I1130fd15af21d3e5a8bb80228d4cb31b5d25e41d

diff --git a/docs/submodules/oom/offline-installer.git b/docs/submodules/oom/offline-installer.git
index dcc72fc..3ac3c6a 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit dcc72fc82c9e892a8cdb058b3f8dba138e9e4192
+Subproject commit 3ac3c6aec5e551b36ad43aeff1279e6182141030