CI: Add ghc-9.8.1 to build matrix #173

Job	Run time
Build Haskell (8.10.7, ubuntu-latest, 3.10.1.0)	1m 44s
Build Haskell (8.10.7, macos-latest, 3.10.1.0)	3m 20s
Build Haskell (8.10.7, windows-latest, 3.10.1.0)	3m 5s
Build Haskell (9.2.7, ubuntu-latest, 3.10.1.0)	1m 42s
Build Haskell (9.2.7, macos-latest, 3.10.1.0)	3m 27s
Build Haskell (9.2.7, windows-latest, 3.10.1.0)	3m 13s
Build Haskell (9.6.3, ubuntu-latest, 3.10.1.0)	2m 7s
Build Haskell (9.6.3, macos-latest, 3.10.1.0)	5m 2s
Build Haskell (9.6.3, windows-latest, 3.10.1.0)	3m 33s
Build Haskell (9.8.1, ubuntu-latest, 3.10.1.0)	1m 15s
Build Haskell (9.8.1, macos-latest, 3.10.1.0)	4m 28s
Build Haskell (9.8.1, windows-latest, 3.10.1.0)	4m 35s
check	5s
release	0s
publish	0s
	37m 36s

Provide feedback