Set CODEQL_PROXY_* vars for init step in test workflow

Author: mbg

.github/workflows/__start-proxy.yml

@@ -42,6 +42,10 @@ steps:
     run: exit 1
 
   - uses: ./../action/init
+    env:
+      CODEQL_PROXY_HOST: ${{ steps.proxy.outputs.proxy_host }}
+      CODEQL_PROXY_PORT: ${{ steps.proxy.outputs.proxy_port }}
+      CODEQL_PROXY_CA_CERTIFICATE: ${{ steps.proxy.outputs.proxy_ca_certificate }}
     with:
       languages: java
       tools: ${{ steps.prepare-test.outputs.tools-url }}