build(workflows): Update workflows to use ubuntu-20.04 (#684)

Added discord notifications to all build jobs

.github/workflows/snap.yaml

@@ -8,8 +8,9 @@ on:
 
 jobs:
   test:
-    name: Lint & Build Test
-    runs-on: ubuntu-latest
+    name: Lint & Test Build
+    runs-on: ubuntu-20.04
+    if: "!contains(github.event.head_commit.message, '[skip ci]')"
     container: node:12.18-alpine
     steps:
       - name: checkout
@@ -25,8 +26,7 @@ jobs:
   build-snap:
     name: Build Snap Package (${{ matrix.architecture }})
     needs: test
-    runs-on: ubuntu-latest
-    if: "!contains(github.event.head_commit.message, '[skip ci]')"
+    runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
       matrix:
@@ -76,10 +76,9 @@ jobs:
           release: ${{ steps.prepare.outputs.RELEASE }}
 
   discord:
-    name: Discord Notification
+    name: Send Discord Notification
     needs: build-snap
-    if: always() && github.event_name != 'pull_request'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - name: Get Build Job Status
         uses: technote-space/workflow-conclusion-action@v1