upload-artifact version bumped to v4

Author: Srinivas-E

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Describe Tag & Branch Name
         if:  github.event_name == 'push' && startsWith(github.ref, 'refs/tags/20')
@@ -59,7 +59,7 @@ jobs:
     name: Build source distribution
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - uses: actions/setup-python@v2
         name: Install Python