workflows: Update Anaconda trigger for -webui split

Since https://github.com/cockpit-project/bots/pull/5524/files
rhinstaller/anaconda was an unknown project. Update it for the webui
split-out.

.github/workflows/trigger-anaconda.yml

@@ -57,4 +57,4 @@ jobs:
           git clone --depth=1 https://github.com/cockpit-project/bots
           mkdir -p ~/.config/cockpit-dev
           echo '${{ secrets.GITHUB_TOKEN }}' > ~/.config/cockpit-dev/github-token
-          bots/tests-trigger --repo ${{ github.repository }} ${{ github.event.number }} fedora-rawhide-boot/cockpit-pr-${{ github.event.number }}@rhinstaller/anaconda
+          bots/tests-trigger --repo ${{ github.repository }} ${{ github.event.number }} fedora-rawhide-boot/cockpit-pr-${{ github.event.number }}@rhinstaller/anaconda-webui