Update dependencies

wallabag-tagger.cabal

@@ -30,7 +30,7 @@ library
                       Version
     -- other-modules:
     -- other-extensions:
-    build-depends:    base ^>=4.18.2.1
+    build-depends:    base ^>=4.20
                     , wreq
                     , lens
                     , katip
@@ -75,7 +75,7 @@ executable wallabag-tagger
     -- other-modules:
     -- other-extensions:
     build-depends:
-        base ^>=4.18.2.1,
+        base ^>=4.20,
         wallabag-tagger
 
     hs-source-dirs:   app
@@ -91,5 +91,5 @@ test-suite wallabag-tagger-test
     hs-source-dirs:   test
     main-is:          Main.hs
     build-depends:
-        base ^>=4.18.2.1,
+        base ^>=4.20,
         wallabag-tagger