Increasing versions of node to test against on commit

Author: GCHQDeveloper1138

.github/workflows/publish.yaml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [10.x, 12.x]
+        node-version: [16.x, 18.x, 20.x]
 
     steps:
     - uses: actions/checkout@v2

.github/workflows/test.yaml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [10.x, 12.x]
+        node-version: [16.x, 18.x, 20.x]
 
     steps:
     - uses: actions/checkout@v1