github: trigger webui: force setting the status

When repushing in a PR while tests have started we get:

Run git clone --depth=1 https://github.com/cockpit-project/bots
Cloning into 'bots'...
fedora-rawhide-boot/anaconda-pr-6060@rhinstaller/anaconda-webui: isn't in triggerable state (is: pending)
Error: Process completed with exit code 1.

Instead we want to trigger a fresh run, regardless of the previous
one's status.

.github/workflows/trigger-webui.yml

@@ -70,4 +70,4 @@ 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 }} ${{ github.event.number }} fedora-rawhide-boot/anaconda-pr-${{ github.event.number }}@rhinstaller/anaconda-webui
+          bots/tests-trigger --force --repo ${{ github.repository }} ${{ github.event.number }} fedora-rawhide-boot/anaconda-pr-${{ github.event.number }}@rhinstaller/anaconda-webui