ci: Update pr-appinspect.yml to ubuntu-20.04

Author: paulmnguyen

.github/workflows/pr-appinspect.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   appinspect-addon:
     name: AppInspect (Add-on)
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04 
     # Remove write permissions
     permissions:
       contents: read
@@ -55,7 +55,7 @@ jobs:
 
   appinspect-app:
     name: AppInspect (App)
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04 
     permissions:
       contents: read
     steps:
@@ -94,4 +94,4 @@ jobs:
         if: '! cancelled()'
         with:
           name: Report-SplunkforPaloAltoNetworks-${{ github.run_id }}.html
-          path: pr/_build/SplunkforPaloAltoNetworks-${{ github.run_id }}.html
+          path: pr/_build/SplunkforPaloAltoNetworks-${{ github.run_id }}.html