fix: use correct Vault password

.gitlab-ci.yml

@@ -47,8 +47,8 @@ test-job:        # This job runs in the test stage.
   script:
     # make sure that Ansible Vaults are present and can be decrypted
     # - sudo chown -R lza /builds/sachse/
-    - echo "${VAULT_INSTALL_COMMON}" > ./lza_install_common.pass
-    - export ANSIBLE_VAULT_PASSWORD_FILE=./lza_install_common.pass
+    - echo "${VAULT_LZA_PROXY}" > ./lza_proxy.pass
+    - export ANSIBLE_VAULT_PASSWORD_FILE=./lza_proxy.pass
     - rm -rf ../ansible_vaults/
     - git clone https://gitlab+deploy-token-25:${VAULT_ACCESS_TOKEN}@git.slub-dresden.de/slub-referat-2-3/ansible_vaults.git ../ansible_vaults/
     # - sudo chmod o-w "${CI_PROJECT_DIR}"