Update all dependencies, Rust edition, and support matrix.

.github/workflows/ci.yml

@@ -25,9 +25,9 @@ jobs:
       - name: Set Matrix
         id: set_matrix
         env:
-          FULL_NODE_VERSIONS: '["14.x", "16.x", "18.x"]'
+          FULL_NODE_VERSIONS: '["18.x", "20.x", "21.x"]'
           FULL_RUST_TOOLCHAINS: '["stable", "nightly"]'
-          PARTIAL_NODE_VERSIONS: '["16.x"]'
+          PARTIAL_NODE_VERSIONS: '["20.x"]'
           PARTIAL_RUST_TOOLCHAINS: '["stable"]'
           HAS_FULL_MATRIX_LABEL: ${{ contains(github.event.pull_request.labels.*.name, 'full matrix') }}
           IS_PUSHED: ${{ github.event_name == 'push' }}
@@ -90,10 +90,6 @@ jobs:
           key: ${{ runner.os }}-electron-${{ hashFiles('./package-lock.json') }}
           path: ~/Library/Caches/electron
 
-      - name: Use npm v8
-        # https://github.com/npm/cli/issues/4552
-        run: npm -g i npm@~8.3
-
       - name: npm install
         run: npm ci --prefer-offline --no-audit --no-fund
 

.github/workflows/lint.yml

@@ -20,7 +20,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16.x]
+        node-version: [20.x]
         rust-toolchain: [nightly]
 
     steps: