[ci] Update to Node18 (#803)

Author: pgrzesik

.github/workflows/publish.yml

@@ -26,12 +26,12 @@ jobs:
           path: |
             ~/.npm
             node_modules
-          key: npm-v14-${{ runner.os }}-refs/heads/master-${{ hashFiles('package.json') }}
+          key: npm-v18-${{ runner.os }}-refs/heads/master-${{ hashFiles('package.json') }}
 
       - name: Install Node.js and npm
         uses: actions/setup-node@v1
         with:
-          node-version: 14.x
+          node-version: 18.x
           registry-url: https://registry.npmjs.org
 
       - name: Publish new version

.github/workflows/validate.yml

@@ -10,8 +10,8 @@ env:
   FORCE_COLOR: 1
 
 jobs:
-  linuxNode14:
-    name: '[Linux] Node.js v14: Lint, Eventual Commitlint, Eventual Changelog, Formatting & Unit tests'
+  linuxNode18:
+    name: '[Linux] Node.js v18: Lint, Eventual Commitlint, Eventual Changelog, Formatting & Unit tests'
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -38,10 +38,10 @@ jobs:
           path: |
             ~/.npm
             node_modules
-          key: npm-v14-${{ runner.os }}-${{ github.ref }}-${{ hashFiles('package.json') }}
+          key: npm-v18-${{ runner.os }}-${{ github.ref }}-${{ hashFiles('package.json') }}
           restore-keys: |
-            npm-v14-${{ runner.os }}-${{ github.ref }}-
-            npm-v14-${{ runner.os }}-refs/heads/master-
+            npm-v18-${{ runner.os }}-${{ github.ref }}-
+            npm-v18-${{ runner.os }}-refs/heads/master-
 
       - name: Set up Python 3.7
         uses: actions/setup-python@v2
@@ -51,7 +51,7 @@ jobs:
       - name: Install Node.js and npm
         uses: actions/setup-node@v1
         with:
-          node-version: 14.x
+          node-version: 18.x
 
       - name: Check python version
         run: |