Support ghc8.0 and ghc8.2 on ubuntu-24.04 (#102)

Fix #101 

This PR is just for supporting ghc8.0 and ghc8.2 on ubuntu22.04 and
ubuntu 24.04, please let me know if I missed something.

---------

Co-authored-by: Andreas Abel <[email protected]>

Author: July541

.github/workflows/workflow.yml

@@ -114,6 +114,19 @@ jobs:
             # TODO: figure out what.
             # cabal update needed here since cabal-2.4 is still v1
 
+          # Test on ubuntu-24.04 with older ghc
+          - os: ubuntu-24.04
+            plan:
+              ghc:   "8.0"
+              cabal: "2.4.1.0"
+              cabal_update: "false"
+
+          - os: ubuntu-22.04
+            plan:
+              ghc:   "8.0"
+              cabal: "2.4.1.0"
+              cabal_update: "false"
+
           # Test some old versions
           - os: ubuntu-latest
             plan: