chore: Add 26.3.0 release (#40)

Author: sbernauer

releases.yaml

@@ -1,9 +1,45 @@
 ---
 releases:
+  26.3:
+    releaseDate: &latest-release-release-date 2026-03-16
+    description: The March 2026 release
+    products: &latest-release-products
+      airflow:
+        operatorVersion: 26.3.0
+      commons:
+        operatorVersion: 26.3.0
+      druid:
+        operatorVersion: 26.3.0
+      hbase:
+        operatorVersion: 26.3.0
+      hdfs:
+        operatorVersion: 26.3.0
+      hive:
+        operatorVersion: 26.3.0
+      kafka:
+        operatorVersion: 26.3.0
+      listener:
+        operatorVersion: 26.3.0
+      nifi:
+        operatorVersion: 26.3.0
+      opa:
+        operatorVersion: 26.3.0
+      opensearch:
+        operatorVersion: 26.3.0
+      secret:
+        operatorVersion: 26.3.0
+      spark-k8s:
+        operatorVersion: 26.3.0
+      superset:
+        operatorVersion: 26.3.0
+      trino:
+        operatorVersion: 26.3.0
+      zookeeper:
+        operatorVersion: 26.3.0
   25.11:
-    releaseDate: &latest-release-release-date 2025-11-07
+    releaseDate: 2025-11-07
     description: The November 2025 release
-    products: &latest-release-products
+    products:
       airflow:
         operatorVersion: 25.11.0
       commons:
@@ -36,7 +72,6 @@ releases:
         operatorVersion: 25.11.0
       zookeeper:
         operatorVersion: 25.11.0
-
   25.7:
     releaseDate: 2025-07-23
     description: The July 2025 release