ci: add build testing against named-data PPA

Change-Id: I39c896a1152e4062be75a74e67b396107babc32a
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a9f36bb..d3110a4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,3 +10,7 @@
     uses: named-data/actions/.github/workflows/jenkins-script-ubuntu.yml@v1
   macOS:
     uses: named-data/actions/.github/workflows/jenkins-script-macos.yml@v1
+  PPA:
+    uses: named-data/actions/.github/workflows/ppa.yml@v1
+    with:
+      extra-deps: libboost-program-options-dev