feat(crypto-nodejs): Define Node.js versions policy.

We now support only “current”, “active” or “maintenance” versions
according to https://nodejs.org/en/about/releases/, which are
compatible with NAPI v6.

.github/workflows/ci.yml

@@ -128,9 +128,9 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        node-version: [14.0, 15.0, 16.0]
+        node-version: [14.0, 16.0, 18.0]
         include:
-          - node-version: 16.0
+          - node-version: 18.0
             build-doc: true
 
     steps:

crates/matrix-sdk-crypto-nodejs/README.md

@@ -18,11 +18,14 @@ pretty classical by using [npm], see [the Downloading and installing
 Node.js and npm
 Page](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm).
 
-The binding is using NAPI 6 (Node API version 6), which means that is
-compatible with Node.js versions 14.0.0, 15.0.0 and 16.0.0 (see [the
-full Node API version
-matrix](https://nodejs.org/api/n-api.html#node-api-version-matrix))
-(we do not support the versions 10.20 and 12.17.0).
+The binding is compatible with, and tested against, the Node.js
+versions that are in “current”, “active” or “maintenance” states,
+according to [the Node.js Releases
+Page](https://nodejs.org/en/about/releases/), _and_ which are
+compatible with [NAPI v6 (Node.js
+API)](https://nodejs.org/api/n-api.html#node-api-version-matrix). It
+means that this binding will work with the following versions: 14.0.0,
+16.0.0 and 18.0.0.
 
 Once the Rust compiler, Node.js and npm are installed, you can run the
 following commands:

crates/matrix-sdk-crypto-nodejs/package.json

@@ -18,7 +18,7 @@
         "typedoc": "^0.22.17"
     },
     "engines": {
-        "node": ">= 10"
+        "node": ">= 14"
     },
     "scripts": {
         "build": "napi build --platform --release --strip",