test: Bump timeouts in slow running tests

test/functional/wallet_backup.py

@@ -49,6 +49,7 @@ class WalletBackupTest(BitcoinTestFramework):
         self.setup_clean_chain = True
         # nodes 1, 2,3 are spenders, let's give them a keypool=100
         self.extra_args = [["-keypool=100"], ["-keypool=100"], ["-keypool=100"], []]
+        self.rpc_timeout = 120
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()