Update version and attributes in antora.yml (#360)

* Update version and attributes in antora.yml

* Apply suggestion from @NataliaIvakina

Author: NataliaIvakina

antora.yml

@@ -1,15 +1,15 @@
 name: java-reference
 title: Java Reference
-version: '2026.06'
+version: '2026.07'
 start_page: ROOT:index.adoc
 nav:
 - modules/ROOT/content-nav.adoc
 asciidoc:
   attributes:
-    neo4j-version: '2026.06'
-    neo4j-version-exact: '2026.06.0'
-    neo4j-buildnumber: '2026.06'
-    java-driver-version: '6.0.5'
+    neo4j-version: '2026.07'
+    neo4j-version-exact: '2026.07.0'
+    neo4j-buildnumber: '2026.07'
+    java-driver-version: '6.2.0'
     neo4j-documentation-branch: 'dev'
     page-origin-private: false
     neo4j-javadocs-base-uri: "{neo4j-docs-base-uri}/java-reference/{neo4j-version}/javadocs"