[spago] add var dependency

This is because CI fails, but locally for me it works without var...

spago.lock

@@ -84,6 +84,7 @@ workspace:
         - uri: ">=9.0.0 <10.0.0"
         - uuid: ">=9.0.0 <10.0.0"
         - validation: ">=6.0.0 <7.0.0"
+        - var
         - web-file: ">=4.0.0 <5.0.0"
         - web-html: ">=4.1.0 <5.0.0"
         - web-socket

spago.yaml

@@ -127,6 +127,7 @@ package:
     - uri: ">=9.0.0 <10.0.0"
     - uuid: ">=9.0.0 <10.0.0"
     - validation: ">=6.0.0 <7.0.0"
+    - var
     - web-file: ">=4.0.0 <5.0.0"
     - web-html: ">=4.1.0 <5.0.0"
     - web-socket
@@ -138,7 +139,7 @@ package:
   build:
     # Be strict about missing packages
     # https://github.com/purescript/spago/issues/1211#issuecomment-2066083651
-    #pedanticPackages: true
+    pedanticPackages: true
     # convert compiler warnings to errors:
     # strict:
     #   true