release: bump 0.5.5 -> 0.5.6 (#180)

Release bump `0.5.5 → 0.5.6` for the Momentum Oscillators family deepening
(#179): ten new indicators (DisparityIndex, FisherRsi, Rmi, DerivativeOscillator,
Rsx, DynamicMomentumIndex, IntradayMomentumIndex, StochasticCci, ElderRay, Qqe),
counter now 413.

Version strings only across all manifests + lockfiles; CHANGELOG `[Unreleased]`
rolled to `[0.5.6] - 2026-06-04` with the new compare links.

examples/node/package-lock.json

@@ -17,7 +17,7 @@
     },
     "../../bindings/node": {
       "name": "wickra",
-      "version": "0.5.5",
+      "version": "0.5.6",
       "license": "MIT OR Apache-2.0",
       "devDependencies": {
         "@napi-rs/cli": "^2.18.0"
@@ -26,12 +26,12 @@
         "node": ">= 18"
       },
       "optionalDependencies": {
-        "wickra-darwin-arm64": "0.5.5",
-        "wickra-darwin-x64": "0.5.5",
-        "wickra-linux-arm64-gnu": "0.5.5",
-        "wickra-linux-x64-gnu": "0.5.5",
-        "wickra-win32-arm64-msvc": "0.5.5",
-        "wickra-win32-x64-msvc": "0.5.5"
+        "wickra-darwin-arm64": "0.5.6",
+        "wickra-darwin-x64": "0.5.6",
+        "wickra-linux-arm64-gnu": "0.5.6",
+        "wickra-linux-x64-gnu": "0.5.6",
+        "wickra-win32-arm64-msvc": "0.5.6",
+        "wickra-win32-x64-msvc": "0.5.6"
       }
     },
     "node_modules/wickra": {