ci: run example in ci

.github/workflows/lint-and-test.yml

@@ -124,6 +124,8 @@ jobs:
         run: cargo run --example books
       - name: Run brands example
         run: cargo run --example brands
+      - name: Run census example
+        run: cargo run --example census
       - name: Run plastics example
         run: cargo run --example plastics
       - name: Run posql_db example (With Blitzar)
@@ -240,4 +242,4 @@ jobs:
       - name: Install solhint
         run: npm install -g solhint
       - name: Run tests
-        run: solhint -c 'crates/proof-of-sql/.solhint.json' 'crates/proof-of-sql/**/*.sol' -w 0
+        run: solhint -c 'crates/proof-of-sql/.solhint.json' 'crates/proof-of-sql/**/*.sol' -w 0