test: add couchbase server 8.0.0 to the test matrix

Author: JesusTheHun

.github/workflows/tests.yml

@@ -22,7 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        couchbase-server-version: [ 'enterprise-7.2.4', 'enterprise-7.6.4' ]
+        couchbase-server-version: [ 'enterprise-7.2.4', 'enterprise-7.6.4', 'enterprise-8.0.0' ]
     services:
       couchbase:
         image: couchbase:${{ matrix.couchbase-server-version }}