Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 23b8ca32cbc95021ef194918ab48567df398ff1f
  - Merge "Rewrite build_nexus_blob script to use functions"
  - Rewrite build_nexus_blob script to use functions

    Rewrite build_nexus_blob.sh script to functions for better future
    maintenance and better possibility to add new features

    Issue-ID: OOM-1977

    Change-Id: I697462efbbeddbe3d89aec47ae7fcfff9f4147b7
    Signed-off-by: Tomáš Levora <t.levora@partner.samsung.com>

diff --git a/docs/submodules/oom/offline-installer.git b/docs/submodules/oom/offline-installer.git
index 5160acf..23b8ca3 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit 5160acf7baf7fdb6364dee4cea8c9198e067aaee
+Subproject commit 23b8ca32cbc95021ef194918ab48567df398ff1f