fix(ci): double-escape ${}

.woodpecker.yml

@@ -41,7 +41,7 @@ steps:
         cat > ~/.schleuder-cli/schleuder-cli.yml <<EOF
         host: localhost
         port: 4443
-        tls_fingerprint: ${CERT_FPR}
+        tls_fingerprint: $${CERT_FPR}
         api_key: '00000000000000000000000000000000'
         EOF
       - /usr/bin/schleuder-api-daemon &
@@ -55,7 +55,7 @@ steps:
       - python3 -m coverage run --rcfile=setup.cfg -m multischleuder --config test/multischleuder.yml --verbose
       - sleep 5  # wait for mail delivery
       - test/report.py
-      - kill -9 ${API_DAEMON_PID} || true
+      - kill -9 $${API_DAEMON_PID} || true
       - /usr/sbin/postmulti -i - -p stop
       - sleep 5  # wait for daemons to terminate