Bump version to 0.3.4 and update Changelog

Change-Id: If3438662c4b40adab912dcba48029ad36135ff60
diff --git a/Changes b/Changes
index 42d6bb0..452b53e 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,11 @@
+0.3.4 2026-02-12
     - Support environment variables overriding configuration properties.
       (closes #161)(diewald)
+    - Fix GitLab CI pipeline (kupietz)
+    - Fixed hard-coded export limit in template (kupietz)
+    - Added test for for maxHitC (diewald)
+    - Upgrade Jersey to 4.0.2 (dependabot)
+    - Upgrade other dependencies (dependabot)
 
 0.3.3 2026-01-29
     - Introduce announcements (diewald)
diff --git a/pom.xml b/pom.xml
index fc63426..f5796b3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>de.ids_mannheim.korap</groupId>
   <artifactId>KalamarExportPlugin</artifactId>
   <packaging>jar</packaging>
-  <version>0.3.3</version>
+  <version>0.3.4</version>
   <name>KalamarExportPlugin</name>
   <url>https://korap.ids-mannheim.de/</url>