Revert "chore: remove cache"

This reverts commit 6d76ef8.

certora/confs/ExactMath.conf

@@ -13,6 +13,7 @@
         "-smt_nonLinearArithmetic true",
         "-solvers [z3:def{randomSeed=1},z3:def{randomSeed=2},z3:def{randomSeed=3},z3:def{randomSeed=4},z3:def{randomSeed=5},z3:def{randomSeed=6},z3:def{randomSeed=7},z3:lia2]",
     ],
+    "cache": "none",
     "server": "production",
     "msg": "Morpho Blue Exact Math"
 }