Release 2.8 updates to website (#480)

* add yaml file updates

Signed-off-by: Deb <deb.taylor@intel.com>

* update release numbers on SOF site

Signed-off-by: Deb <deb.taylor@intel.com>

---------

Signed-off-by: Deb <deb.taylor@intel.com>

Author: deb-intel

conf.py

@@ -74,14 +74,14 @@
 
 # General information about the project.
 project = u'SOF Project'
-copyright = u'2023, SOF Project'
+copyright = u'2024, SOF Project'
 author = u'SOF Project developers'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 
-version = release = "2.7.0"
+version = release = "2.8.0"
 
 #
 # The short X.Y version.

release.rst

@@ -26,7 +26,7 @@ kernel, and documentation. Download the source code as a zip or tar.gz file:
 Source and Binary Releases
 --------------------------
 
-The latest SOF release is v2.7.0 (Sept 2023).
+The latest SOF release is v2.8.0 (Dec 2023).
 
 View new feature information and release downloads for the latest and
 previous releases on GitHub. Firmware and SDK tool source code and binary