release: bump 0.5.3 -> 0.5.4 (#176)

Version bump 0.5.3 -> 0.5.4 for the release that ships the 19 external-feature-coverage indicators (#175, 377 -> 396).

Bumped: Cargo workspace + wickra-core dep, Cargo.lock (cargo build), pyproject.toml, node package.json (+6 optionalDependencies), 6 npm platform package.json, both package-lock.json, CHANGELOG ([Unreleased] -> [0.5.4]).

fmt/test/clippy green locally.

examples/node/package-lock.json

@@ -17,7 +17,7 @@
     },
     "../../bindings/node": {
       "name": "wickra",
-      "version": "0.5.3",
+      "version": "0.5.4",
       "license": "MIT OR Apache-2.0",
       "devDependencies": {
         "@napi-rs/cli": "^2.18.0"
@@ -26,12 +26,12 @@
         "node": ">= 18"
       },
       "optionalDependencies": {
-        "wickra-darwin-arm64": "0.5.3",
-        "wickra-darwin-x64": "0.5.3",
-        "wickra-linux-arm64-gnu": "0.5.3",
-        "wickra-linux-x64-gnu": "0.5.3",
-        "wickra-win32-arm64-msvc": "0.5.3",
-        "wickra-win32-x64-msvc": "0.5.3"
+        "wickra-darwin-arm64": "0.5.4",
+        "wickra-darwin-x64": "0.5.4",
+        "wickra-linux-arm64-gnu": "0.5.4",
+        "wickra-linux-x64-gnu": "0.5.4",
+        "wickra-win32-arm64-msvc": "0.5.4",
+        "wickra-win32-x64-msvc": "0.5.4"
       }
     },
     "node_modules/wickra": {