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.

examples/node/package-lock.json

@@ -17,7 +17,7 @@
     },
     "../../bindings/node": {
       "name": "wickra",
-      "version": "0.6.1",
+      "version": "0.6.2",
       "license": "MIT OR Apache-2.0",
       "devDependencies": {
         "@napi-rs/cli": "^2.18.0"
@@ -26,12 +26,12 @@
         "node": ">= 18"
       },
       "optionalDependencies": {
-        "wickra-darwin-arm64": "0.6.1",
-        "wickra-darwin-x64": "0.6.1",
-        "wickra-linux-arm64-gnu": "0.6.1",
-        "wickra-linux-x64-gnu": "0.6.1",
-        "wickra-win32-arm64-msvc": "0.6.1",
-        "wickra-win32-x64-msvc": "0.6.1"
+        "wickra-darwin-arm64": "0.6.2",
+        "wickra-darwin-x64": "0.6.2",
+        "wickra-linux-arm64-gnu": "0.6.2",
+        "wickra-linux-x64-gnu": "0.6.2",
+        "wickra-win32-arm64-msvc": "0.6.2",
+        "wickra-win32-x64-msvc": "0.6.2"
       }
     },
     "node_modules/wickra": {