Update workflows to use Node.js 20 due to deprecation of Node.js 16

.github/workflows/ccpp.yml

@@ -11,8 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v2
-    
+    - uses: actions/checkout@v4
     - name: Setup build directory
       run: mkdir buildproducts
       
@@ -30,7 +29,7 @@ jobs:
         cp include/epanet2_2.h buildproducts/
         cp include/epanet2_enums.h buildproducts/
         
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v4
       with:
         name: libepanet-output
         path: buildproducts/

.github/workflows/win32.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
           
       - name: Setup build directory
         run: mkdir buildproducts
@@ -28,7 +28,7 @@ jobs:
           copy include\epanet2_enums.h buildproducts\bin\Release
         shell: cmd
         
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: epanet2-win32
           path: buildproducts\bin\Release

.github/workflows/win64.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
           
       - name: Setup build directory
         run: mkdir buildproducts
@@ -28,7 +28,7 @@ jobs:
           copy include\epanet2_enums.h buildproducts\bin\Release
         shell: cmd
 
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: epanet2-win64
           path: buildproducts\bin\Release