Use Node.js v16 in all Actions

This is now in active LTS status.

analyze/action.yml

@@ -72,5 +72,5 @@ outputs:
   sarif-id:
     description: The ID of the uploaded SARIF file.
 runs:
-  using: "node12"
+  using: "node16"
   main: "../lib/analyze-action.js"

autobuild/action.yml

@@ -7,5 +7,5 @@ inputs:
   matrix:
     default: ${{ toJson(matrix) }}
 runs:
-  using: 'node12'
+  using: 'node16'
   main: '../lib/autobuild-action.js'

init/action.yml

@@ -73,5 +73,5 @@ outputs:
   codeql-path:
     description: The path of the CodeQL binary used for analysis
 runs:
-  using: 'node12'
+  using: 'node16'
   main: '../lib/init-action.js'

upload-sarif/action.yml

@@ -34,5 +34,5 @@ outputs:
   sarif-id:
     description: The ID of the uploaded SARIF file.
 runs:
-  using: 'node12'
+  using: 'node16'
   main: '../lib/upload-sarif-action.js'