Update firebase deploy base image node to v22 (#236)

cloud_build/firebase-ghcli/Dockerfile

@@ -11,7 +11,7 @@ RUN apt update && apt install -y gh;
 # Install the latest LTS of Node, which also includes npm.
 RUN mkdir -p /etc/apt/keyrings
 RUN curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg
-ENV NODE_MAJOR=20
+ENV NODE_MAJOR=22
 RUN echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$NODE_MAJOR.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list
 RUN apt-get update
 RUN apt-get install nodejs -y