v5.0.x: update prrte submodule pointer, update version and docs for rc3

Signed-off-by: Tomislav Janjusic <tomislavj@nvidia.com>

Author: janjust

3rd-party/prrte

@@ -41,7 +41,7 @@ flex_min_version=2.5.4
 # requirement is that it must be entirely printable ASCII characters
 # and have no white space.
 
-greek=rc2
+greek=rc3
 
 # If repo_rev is empty, then the repository version number will be
 # obtained during "make dist" via the "git describe --tags --always"

VERSION

@@ -4,6 +4,14 @@ Open MPI v5.0.x series
 This file contains all the NEWS updates for the Open MPI v5.0.x
 series, in reverse chronological order.
 
+Open MPI Version v5.0.8rc3
+------------------------------
+:Date: 19 May 2025
+
+- Internal PMIx and PRRTe versions:
+  - PMIx (v5.0.8). Repo: ``https://github.com/openpmix/openpmix``. Commit hash: ``907b1ccaeec61a1197f0ee5264d4fef20b257b84``.
+  - PRRTE (v3.0.11). Repo: ``https://github.com/openpmix/prrte``. Commit hash: ``222f03fbb98b71abd293aa205b38fa9a38e57965``.
+
 Open MPI Version v5.0.8rc2
 ------------------------------
 :Date: 12 May 2025