Merge pull request #868 from puppetlabs/maint-test_on_puppet8

(maint) - run ci with puppet 8 on linux

Author: gavindidrichsen

.github/workflows/nightly.yml

@@ -24,8 +24,8 @@ jobs:
         if: runner.os == 'Linux'
         run: |
           /usr/bin/Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 & echo ">>> Started xvfb";
-          wget https://apt.puppetlabs.com/puppet6-release-trusty.deb;
-          sudo dpkg -i puppet6-release-trusty.deb;
+          wget https://apt.puppetlabs.com/puppet8-release-jammy.deb;
+          sudo dpkg -i puppet8-release-jammy.deb;
           sudo apt-get update -y;
           sudo apt-get install pdk -y;
           pdk --version;

.github/workflows/vscode-ci.yml

@@ -25,8 +25,8 @@ jobs:
         if: runner.os == 'Linux'
         run: |
           /usr/bin/Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 & echo ">>> Started xvfb";
-          wget https://apt.puppetlabs.com/puppet6-release-trusty.deb;
-          sudo dpkg -i puppet6-release-trusty.deb;
+          wget https://apt.puppetlabs.com/puppet8-release-jammy.deb;
+          sudo dpkg -i puppet8-release-jammy.deb;
           sudo apt-get update -y;
           sudo apt-get install pdk -y;
           pdk --version;