Set Pandora's address in the contracts

Use Pandora's address:

• For the rollup to upgrade

./octez-client transfer 0 from $ADMIN to $UPGRADER --entrypoint "set_rollup_address" --arg '"sr1Bu89iV5Pki7TBSjMeZMEigNfebwQBUTSZ"' --burn-cap 999

• For the authentified withdrawer

./octez-client transfer 0 from $ADMIN to $BRIDGE --entrypoint "set_rollup_address" --arg '"sr1Bu89iV5Pki7TBSjMeZMEigNfebwQBUTSZ"' --burn-cap 999