build: add Node.js versions 18 and 20 to the matrix

Author: kgryte

.github/workflows/linux_test_install.yml

@@ -78,7 +78,7 @@ jobs:
         BUILD_TASK: ['test-install']
 
         # Define the list of Node.js versions on which to run this job:
-        NODE_VERSION: ['16', '14', '12', '10', '8', '6', '4', '0.12', '0.10']
+        NODE_VERSION: ['20', '18', 16', '14', '12', '10', '8', '6', '4', '0.12', '0.10']
 
         # Define the list of package managers to test:
         PACKAGE_MANAGER: ['npm']
@@ -91,6 +91,14 @@ jobs:
           - OS: 'ubuntu-latest'
             PLATFORM: 'linux'
 
+          - NODE_VERSION: '20'
+            NPM_VERSION: '>10.0.0'
+            PNPM_VERSION: '6'
+
+          - NODE_VERSION: '18'
+            NPM_VERSION: '>10.0.0'
+            PNPM_VERSION: '6'
+
           - NODE_VERSION: '16'
             NPM_VERSION: '>2.7.0 <10.0.0'
             PNPM_VERSION: '6'