Use latest Node LTS version (18)

Author: zofrex

.github/workflows/check-node-modules.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Set up NodeJS environment
       uses: actions/setup-node@v1
       with:
-        node-version: '12'
+        node-version: '18'
 
     - name: Check that 'npm install' would make no changes
       run: >

.github/workflows/npm-install.yml

@@ -25,7 +25,7 @@ jobs:
     - name: Set up NodeJS environment
       uses: actions/setup-node@v1
       with:
-        node-version: '12'
+        node-version: '18'
 
     - name: npm install
       run: npm install

.github/workflows/prepare-release.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Set up NodeJS environment
         uses: "actions/setup-node@v1"
         with:
-          node-version: 12
+          node-version: '18'
 
       - name: Set up Git environment
         run: |