Add macOS 11 legacy to the build workflows

Author: GarboMuffin

.github/workflows/build.yml

@@ -59,6 +59,7 @@ jobs:
     - name: Package
       run: |
         node release-automation/build.mjs --mac --universal
+        node release-automation/build.mjs --mac-legacy-11 --universal
         node release-automation/build.mjs --mac-legacy-10.13-10.14 --mac-legacy-10.15 --x64
     - name: Print file tree
       run: node scripts/print-file-tree.mjs dist

.github/workflows/release.yml

@@ -77,6 +77,7 @@ jobs:
         # @electron/notaraize documentation says key should be an absolute path
         export APPLE_API_KEY="$(pwd)/$APPLE_API_KEY_NAME"
         node release-automation/build.mjs --mac --universal --production
+        node release-automation/build.mjs --mac-legacy-11 --universal --production
         # These macOS versions never ran on an Apple Silicon device, so only need x64
         node release-automation/build.mjs --mac-legacy-10.13-10.14 --mac-legacy-10.15 --x64 --production
         # for safety