Change the location for the project signer public keys:

The automated build system only builds packages signed with a list of
approved keys. This is a security measure to prevent someone who gains
push access to the repository from producing potentially malicious
packages that are signed by Ripple's trusted private keys.

Moving this list to the new location makes it easy to add and delete
new keys to the list.

Builds/containers/gitlab-ci/pkgbuild.yml

@@ -19,7 +19,7 @@ variables:
   DPKG_CONTAINER_FULLNAME: "${DPKG_CONTAINER_NAME}:${DPKG_CONTAINER_TAG}"
   ARTIFACTORY_HOST: "artifactory.ops.ripple.com"
   ARTIFACTORY_HUB: "${ARTIFACTORY_HOST}:6555"
-  GIT_SIGN_PUBKEYS_URL: "https://gitlab.ops.ripple.com/snippets/11/raw"
+  GIT_SIGN_PUBKEYS_URL: "https://gitlab.ops.ripple.com/xrpledger/rippled-packages/snippets/49/raw"
   PUBLIC_REPO_ROOT: "https://repos.ripple.com/repos"
   # also need to define this variable ONLY for the primary
   # build/publish pipeline on the mainline repo: