release: bump 0.6.1 -> 0.6.2 (#194)

Version bump for the **v0.6.2** release shipping the **B7 Trailing Stops** family (#193): 434 -> 440 indicators.

Bumps workspace + Python/Node/WASM package versions, lockfiles and CHANGELOG (cuts the `[0.6.2]` section). No code changes.

bindings/node/package.json

@@ -1,6 +1,6 @@
 {
   "name": "wickra",
-  "version": "0.6.1",
+  "version": "0.6.2",
   "description": "Streaming-first technical indicators: incremental, fast, install-free. Node bindings powered by Rust.",
   "author": "kingchenc <support@wickra.org>",
   "main": "index.js",
@@ -47,12 +47,12 @@
     "node": ">= 18"
   },
   "optionalDependencies": {
-    "wickra-linux-x64-gnu": "0.6.1",
-    "wickra-linux-arm64-gnu": "0.6.1",
-    "wickra-darwin-x64": "0.6.1",
-    "wickra-darwin-arm64": "0.6.1",
-    "wickra-win32-x64-msvc": "0.6.1",
-    "wickra-win32-arm64-msvc": "0.6.1"
+    "wickra-linux-x64-gnu": "0.6.2",
+    "wickra-linux-arm64-gnu": "0.6.2",
+    "wickra-darwin-x64": "0.6.2",
+    "wickra-darwin-arm64": "0.6.2",
+    "wickra-win32-x64-msvc": "0.6.2",
+    "wickra-win32-arm64-msvc": "0.6.2"
   },
   "scripts": {
     "build": "napi build --platform --release",