chore: update n8n to 2.6.3 and bump version to 2.33.6

- Updated n8n from 2.4.4 to 2.6.3
- Updated n8n-core from 2.4.2 to 2.6.1
- Updated n8n-workflow from 2.4.2 to 2.6.0
- Updated @n8n/n8n-nodes-langchain from 2.4.3 to 2.6.2
- Rebuilt node database with 806 nodes (544 from n8n-nodes-base, 262 from @n8n/n8n-nodes-langchain)
- Re-fetched 398 community nodes (331 verified, 67 from npm)
- Updated README badge with new n8n version
- Updated CHANGELOG with dependency changes

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

dist/database/database-adapter.js

@@ -311,6 +311,17 @@ class SQLJSStatement {
         this.stmt = stmt;
         this.onModify = onModify;
         this.boundParams = null;
+        this.freed = false;
+    }
+    freeStatement() {
+        if (!this.freed && this.stmt) {
+            try {
+                this.stmt.free();
+                this.freed = true;
+            }
+            catch (e) {
+            }
+        }
     }
     run(...params) {
         try {
@@ -331,6 +342,9 @@ class SQLJSStatement {
             this.stmt.reset();
             throw error;
         }
+        finally {
+            this.freeStatement();
+        }
     }
     get(...params) {
         try {
@@ -352,6 +366,9 @@ class SQLJSStatement {
             this.stmt.reset();
             throw error;
         }
+        finally {
+            this.freeStatement();
+        }
     }
     all(...params) {
         try {
@@ -372,6 +389,9 @@ class SQLJSStatement {
             this.stmt.reset();
             throw error;
         }
+        finally {
+            this.freeStatement();
+        }
     }
     iterate(...params) {
         return this.all(...params)[Symbol.iterator]();