Update various workflow action versions for node 20 compatibility

Updating:

* actions/upload-artifact@v3 ->  4
* @actions/checkout@3 ->4
* actions/download-artifact@v3 -> 4

.github/workflows/build.yml

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e3690a1..15b7a35 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -46,7 +46,7 @@
 
       - run: npm run build
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: js
           path: |
@@ -85,9 +85,9 @@
 #            cpu: darwin_x86_64
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         if: ${{ !env.ACT }}
         with:
           name: js
@@ -106,7 +106,7 @@
       # need to copy to output directory as `bazel-bin` is a symlink and cannot be read by the actions/upload-artifact action
       - run: cp bazel-bin/protobuf-javascript-* out/
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: releases
           path: out
@@ -120,7 +120,7 @@
       contents: write
 
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: releases