Remove ghc-8.0 of error-messages test

Author: junjihashimoto

.github/workflows/ci.yml

@@ -121,8 +121,6 @@ jobs:
     strategy:
       matrix:
         include:
-          - ghc: "8.10"
-            os: ubuntu-latest
           - ghc: "9.0"
             os: ubuntu-latest
 

package.yaml

@@ -25,7 +25,7 @@ dependencies:
 library:
   source-dirs:      src
   dependencies:
-    - ghc >= 8.10.2 && <= 9.1
+    - ghc >= 8.10.2 && <9.1
     - containers >= 0.6.2.1
     - term-rewriting >= 0.3.0.1
     - transformers >= 0.5.6.2

typelevel-rewrite-rules.cabal

@@ -48,7 +48,7 @@ library
   build-depends:
       base >=4.12 && <5
     , containers >=0.6.2.1
-    , ghc >=8.10.2 && <= 9.1
+    , ghc >=8.10.2 && <9.1
     , ghc-prim >=0.5.3
     , term-rewriting >=0.3.0.1
     , transformers >=0.5.6.2