Cherry-pick commits from #678 (#683)

* Udate to 2026.04.000 deployment

* Updated checksums as part of https://github.com/ACCESS-NRI/access-esm1.6-configs/actions/runs/24377857922

---------

Co-authored-by: Spencer Wong <spencer.wong@anu.edu.au>
Co-authored-by: access-bot <113399144+access-bot@users.noreply.github.com>

Author: 3 people

config.yaml

@@ -30,7 +30,7 @@ modules:
   use:
       - /g/data/vk83/modules
   load:
-      - access-esm1p6/2026.02.001
+      - access-esm1p6/2026.04.000
 
 # Model configuration
 model: access-esm1.6

manifests/exe.yaml

@@ -2,10 +2,10 @@ format: yamanifest
 version: 1.0
 ---
 work/atmosphere/um_hg3.exe:
-  fullpath: /g/data/vk83/apps/spack/1.1/restricted/ukmo/release/linux-x86_64_v4/um7-git.2026.02.000_access-esm1.6-7cmpnxlr3viabrqh3urxtam72pdhsnnk/bin/um_hg3.exe
+  fullpath: /g/data/vk83/apps/spack/1.1/restricted/ukmo/release/linux-x86_64_v4/um7-git.2026.04.000_access-esm1.6-bdlpvvfpydgedzzktzviqovdeb3fyzbt/bin/um_hg3.exe
   hashes:
-    binhash: 24441fb363225ea9aa36ccf469407271
-    md5: a4a5cc3bc4d3ae582d27d0d813945d36
+    binhash: b50e55d6864e954ec5f1158367798a75
+    md5: 380e93d7cbcc0a6c68d8817c55b694d4
 work/ice/cice_access_360x300_30x300.exe:
   fullpath: /g/data/vk83/apps/spack/1.1/restricted/ukmo/release/linux-x86_64_v4/cice5-2026.01.000-y5g2qcrhzizcfpgshvkpm3xdxwy2th4h/bin/cice_access_360x300_30x300.exe
   hashes: