chore: bump awalsh128/cache-apt-pkgs-action from 1.5.3 to 1.6.0

Bumps [awalsh128/cache-apt-pkgs-action](https://github.com/awalsh128/cache-apt-pkgs-action) from 1.5.3 to 1.6.0.
- [Release notes](https://github.com/awalsh128/cache-apt-pkgs-action/releases)
- [Commits](2c09a5e66d...acb598e5dd)

---
updated-dependencies:
- dependency-name: awalsh128/cache-apt-pkgs-action
  dependency-version: 1.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yaml

@@ -162,7 +162,7 @@ jobs:
 
     steps:
       - run: sudo apt update && sudo apt install -y libkrb5-dev
-      - uses: awalsh128/cache-apt-pkgs-action@2c09a5e66da6c8016428a2172bd76e5e4f14bb17 # latest
+      - uses: awalsh128/cache-apt-pkgs-action@acb598e5ddbc6f68a970c5da0688d2f3a9f04d05 # latest
         with:
           packages: quilt
           version: 1.0

.github/workflows/release.yaml

@@ -50,7 +50,7 @@ jobs:
 
     steps:
       - run: sudo apt update && sudo apt install -y libkrb5-dev
-      - uses: awalsh128/cache-apt-pkgs-action@2c09a5e66da6c8016428a2172bd76e5e4f14bb17 # latest
+      - uses: awalsh128/cache-apt-pkgs-action@acb598e5ddbc6f68a970c5da0688d2f3a9f04d05 # latest
         with:
           packages: quilt
           version: 1.0

ci/build/build-release.sh

@@ -85,11 +85,15 @@ EOF
   ) > "$RELEASE_PATH/package.json"
   mv npm-shrinkwrap.json "$RELEASE_PATH"
 
-  rsync ci/build/npm-postinstall.sh "$RELEASE_PATH/postinstall.sh"
-
   if [ "$KEEP_MODULES" = 1 ]; then
     rsync node_modules/ "$RELEASE_PATH/node_modules"
+    # Remove dev dependencies.
+    pushd "$RELEASE_PATH"
+    npm prune --production
+    popd
   fi
+
+  rsync ci/build/npm-postinstall.sh "$RELEASE_PATH/postinstall.sh"
 }
 
 bundle_vscode() {
@@ -108,7 +112,9 @@ bundle_vscode() {
   # need it for the npm package.
   rsync_opts+=(--exclude /node)
 
-  # Exclude Node modules.
+  # Exclude Node modules.  Note that these will already only include production
+  # dependencies, so if we do keep them there is no need to do any
+  # post-processing to remove dev dependencies.
   if [[ $KEEP_MODULES = 0 ]]; then
     rsync_opts+=(--exclude node_modules)
   fi