ci: install wget to download missing dep

Author: salvafern

.github/workflows/rhub.yaml

@@ -56,8 +56,10 @@ jobs:
         with:
           token: ${{ secrets.RHUB_TOKEN }}
           job-config: ${{ matrix.config.job-config }}
-      - name: Manually install `libraptor2-dev` from Ubuntu 20.04
+      - name: Install `wget` and download `libraptor2-dev`
         run: |
+          sudo apt-get update
+          sudo apt-get install -y wget
           wget http://archive.ubuntu.com/ubuntu/pool/universe/r/raptor2/libraptor2-0_2.0.15-0ubuntu1_amd64.deb
           wget http://archive.ubuntu.com/ubuntu/pool/universe/r/raptor2/libraptor2-dev_2.0.15-0ubuntu1_amd64.deb
           sudo dpkg -i libraptor2-0_2.0.15-0ubuntu1_amd64.deb