Update ChangeLog for cam6_4_129

Author: cacraigucar

doc/ChangeLog

@@ -1,3 +1,60 @@
+
+===============================================================
+
+Tag name: cam6_4_129
+Originator(s): cacraig
+Date: Nov 18, 2025
+One-line Summary: Update externals to match cesm3_0_alpha07g
+Github PR URL: https://github.com/ESCOMP/CAM/pull/1436
+
+Purpose of changes (include the issue number and title text for each relevant GitHub issue):
+  - Update externals to match alpha07g externals: https://github.com/ESCOMP/CAM/issues/1418
+  - ne0CONUSne30x8 prealpha test failing: https://github.com/ESCOMP/CAM/issues/1434
+
+Describe any changes made to build system: N/A
+
+Describe any changes made to the namelist: N/A
+
+List any changes to the defaults for the boundary datasets: N/A
+
+Describe any substantial timing or memory changes: N/A
+
+Code reviewed by: jimmielin
+
+List all files eliminated: N/A
+
+List all files added and what they do: N/A
+
+List all existing files that have been modified, and describe the changes:
+M       .gitmodules
+M       cime
+M       components/cdeps
+M       components/cice
+M       components/cmeps
+         - update externals to match alpha07g
+
+M       cime_config/testdefs/testlist_cam.xml
+         - Increase nodes for CONUS tests
+
+If there were any failures reported from running test_driver.sh on any test
+platform, and checkin with these failures has been OK'd by the gatekeeper,
+then copy the lines from the td.*.status files for the failed tests to the
+appropriate machine below.  All failed tests must be justified.
+
+** All test suites have namelist changes
+
+derecho/intel/aux_cam: all BFB except:
+  SMS_D_Ln9_P1536x1.ne0CONUSne30x8_ne0CONUSne30x8_mt12.FCHIST.derecho_intel.cam-outfrq9s
+     - new baseline due to change in processor count in directory name
+
+derecho/nvhpc/aux_cam:
+     - timing issue - will increase timing in next tag
+
+izumi/nag/aux_cam: all BFB
+
+izumi/gnu/aux_cam: all BFB
+
+===============================================================
 ===============================================================
 
 Tag name: cam6_4_128