[CI] install Scala CLI using Github Action

Author: pjfanning

Diff for: .github/workflows/nightly-builds.yml

@@ -3,6 +3,7 @@ name: Nightly Builds
 on:
   schedule:
     - cron: "0 0 * * *"
+  pull_request:
   workflow_dispatch:
 
 permissions: {}
@@ -11,7 +12,7 @@ jobs:
   pekko-cluster-metrics-sigar:
     name: Pekko Cluster Metrics Test with Sigar
     runs-on: ubuntu-22.04
-    if: github.repository == 'apache/pekko'
+    if: github.repository == 'xapache/pekko'
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -67,7 +68,7 @@ jobs:
   pekko-classic-remoting-tests:
     name: Pekko Classic Remoting Tests
     runs-on: ubuntu-22.04
-    if: github.repository == 'apache/pekko'
+    if: github.repository == 'xapache/pekko'
     strategy:
       fail-fast: false
       matrix:
@@ -166,23 +167,6 @@ jobs:
             -Dio.netty.leakDetection.level=PARANOID \
             clean "++ ${{ matrix.scalaVersion }} test" checkTestsHaveRun
 
-# comment out test report until an apache or GitHub published action (action-surefire-report) can be found or added allowlist from INFRA
-#      - name: Test Reports
-#        # Makes it easier to spot failures instead of looking at the logs.
-#        if: ${{ failure() }}
-#        uses: marcospereira/action-surefire-report@v1
-#        with:
-#          report_paths: '**/target/test-reports/TEST-*.xml'
-#          fail_if_no_tests: false
-
-#      # Archive test results so we can do some diagnostics later
-#      - name: Upload test results
-#        uses: actions/upload-artifact@v2
-#        if: success() || failure()        # run this step even if previous step failed
-#        with:
-#          name: test-results-${{ matrix.javaVersion }}-${{ matrix.scalaVersion }}
-#          path: '**/target/test-reports/TEST-*.xml'
-
       - name: Docs
         # Docs generation requires JDK 11.
         if: ${{ matrix.javaVersion == 11 }}
@@ -202,13 +186,9 @@ jobs:
             -Dpekko.build.scalaVersion=${{ matrix.scalaVersion }} \
             "++ ${{ matrix.scalaVersion }} ;publishLocal;publishM2"
 
-      - name: Install scala-cli
+      - name: Install Scala-CLI
         if: ${{ matrix.javaVersion == 11 }}
-        run: |-
-          curl -sS "https://virtuslab.github.io/scala-cli-packages/KEY.gpg" | sudo gpg --dearmor  -o /etc/apt/trusted.gpg.d/scala-cli.gpg 2>/dev/null
-          sudo curl -s --compressed -o /etc/apt/sources.list.d/scala_cli_packages.list "https://virtuslab.github.io/scala-cli-packages/debian/scala_cli_packages.list"
-          sudo apt update
-          sudo apt install scala-cli
+        uses: VirtusLab/scala-cli-setup@main
 
       - name: Use Scala-CLI to verify jdk 9 classes
         if: ${{ matrix.javaVersion == 11 }}