bump cardano node version in nightly synchronization workflow.

Author: KtorZ

.github/workflows/network-synchronization.yaml

@@ -17,7 +17,7 @@ jobs:
       matrix:
         network: [ preview ]
         ogmios_version: [ v6.11.0 ]
-        cardano_node_version: [ 10.1.4 ]
+        cardano_node_version: [ 11.0.1 ]
 
     runs-on: ubuntu-latest
     steps: