CI: Use CrateDB 5.5.3

Author: amotl

.github/workflows/tests.yml

@@ -26,11 +26,12 @@ jobs:
       matrix:
         os: ["ubuntu-latest"]
         python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        cratedb-version: ["5.5.3"]
       fail-fast: false
 
     services:
       cratedb:
-        image: crate/crate:nightly
+        image: crate/crate:${{ matrix.cratedb-version }}
         ports:
           - 4200:4200
           - 5432:5432