Update git submodules

* Update docs/submodules/ccsdk/dashboard.git from branch 'master'
  to 646fb75dbedd44a769faeb1c1ca075dc3a932883
  - Update POM to set EPSDK 2.5.0 release version
    
    set dependency <epsdk.version>2.5.0</epsdk.version>
    
    Issue-ID: CCSDK-1011
    Change-Id: I3ce55dbae4f58b0b892b0039d25cbec6bdaf14b1
    Signed-off-by: Kotagiri, Ramprasad (rp5662) <rp5662@att.com>
    
diff --git a/docs/submodules/ccsdk/dashboard.git b/docs/submodules/ccsdk/dashboard.git
index 82be31b..646fb75 160000
--- a/docs/submodules/ccsdk/dashboard.git
+++ b/docs/submodules/ccsdk/dashboard.git
@@ -1 +1 @@
-Subproject commit 82be31b8817c8070d5eff1f998098ee476c156ed
+Subproject commit 646fb75dbedd44a769faeb1c1ca075dc3a932883