Update the Stack LTS version

Author: toku-sa-n

stack.yaml

@@ -1,10 +1,10 @@
-resolver: lts-19.23
-compiler: ghc-9.2.4
+resolver: lts-20.4
 packages:
 - '.'
-extra-deps:
-- base-compat-0.12.2
-- base-compat-batteries-0.12.2
-- ghc-lib-parser-9.2.3.20220527
 
 allow-newer: True
+
+flags:
+  ghc-lib-parser-ex:
+    auto: false
+    no-ghc-lib: false

stack.yaml.lock

@@ -3,31 +3,10 @@
 # For more information, please see the documentation at:
 #   https://docs.haskellstack.org/en/stable/lock_files
 
-packages:
-- completed:
-    hackage: base-compat-0.12.2@sha256:85d820a15e3f00f1781ac939cb9cdccdcc6f38c43e4c74a6e83e5d75f67b61a0,6960
-    pantry-tree:
-      sha256: 67b3f19a22ea6de8aee52eb840225d8cb185c1530366cfe813a32229cf66118f
-      size: 9038
-  original:
-    hackage: base-compat-0.12.2
-- completed:
-    hackage: base-compat-batteries-0.12.2@sha256:ecf0bb2b39be54f1ffa185d37663702b0651d34d1cdcc32d32bb8f7279396afe,8627
-    pantry-tree:
-      sha256: 542c975ff6d622880aa67aaf4dd9bbe403d6d8666b868681305751e85d50fb38
-      size: 11169
-  original:
-    hackage: base-compat-batteries-0.12.2
-- completed:
-    hackage: ghc-lib-parser-9.2.3.20220527@sha256:f43ed294dd3fcd133037bc86e8976ada653c8ab0f248dfbddb3bf45c9ae14bff,12720
-    pantry-tree:
-      sha256: 6ee44184738ae0cdcbf6b8340fd7010fc8ccb9630fb0cda0c25225a9b4937294
-      size: 27578
-  original:
-    hackage: ghc-lib-parser-9.2.3.20220527
+packages: []
 snapshots:
 - completed:
-    sha256: f5d9002479d87103fd070f17cfe71fcd2147676f1e47a2dabca5ab91a42b846d
-    size: 619399
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/19/23.yaml
-  original: lts-19.23
+    sha256: 3770dfd79f5aed67acdcc65c4e7730adddffe6dba79ea723cfb0918356fc0f94
+    size: 648660
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/20/4.yaml
+  original: lts-20.4