Remove github workflow for fetching latest node version, as node rele…

…ases come with breaking changes that should be controlled manually once corresponding scripts are ready. Instead adapted guild-deploy.sh to read from the cardano-node-latest.txt to have central point for deployment's node versions (can still be overridden with CARDANO_NODE_VERSION)

files/docker/node/release-versions/cardano-node-latest.txt

@@ -0,0 +1 @@
+8.9.3

scripts/cnode-helper-scripts/guild-deploy.sh

@@ -107,7 +107,7 @@ set_defaults() {
   [[ -z "${BRANCH}" ]] && BRANCH="master"
   [[ "${SUDO}" = 'Y' ]] && sudo="sudo" || sudo=""
   [[ "${SUDO}" = 'Y' && $(id -u) -eq 0 ]] && err_exit "Please run as non-root user."
-  [[ -z "${CARDANO_NODE_VERSION}" ]] && CARDANO_NODE_VERSION="8.9.3"
+  [[ -z "${CARDANO_NODE_VERSION}" ]] && CARDANO_NODE_VERSION="$(curl -sfk "https://raw.githubusercontent.com/${G_ACCOUNT}/guild-operators/${BRANCH}/files/docker/node/release-versions/cardano-node-latest.txt")"
   CNODE_HOME="${CNODE_PATH}/${CNODE_NAME}"
   CNODE_VNAME=$(echo "$CNODE_NAME" | awk '{print toupper($0)}')
   REPO="https://github.com/${G_ACCOUNT}/guild-operators"