collab: Increase `DATABASE_MAX_CONNECTIONS` for Collab server (#35818)

Marshall Bowers , Nathan , and Mikayla created 

This PR increases the `DATABASE_MAX_CONNECTIONS` limit for the Collab
server to 850 (up from 250).

Release Notes:

- N/A

Co-authored-by: Nathan <nathan@zed.dev>
Co-authored-by: Mikayla <mikayla@zed.dev>

Change summary

.github/workflows/deploy_collab.yml          | 2 ++
crates/collab/k8s/environments/production.sh | 3 ++-
2 files changed, 4 insertions(+), 1 deletion(-)

Detailed changes

.github/workflows/deploy_collab.yml 🔗 

@@ -137,12 +137,14 @@ jobs:
 
           export ZED_SERVICE_NAME=collab
           export ZED_LOAD_BALANCER_SIZE_UNIT=$ZED_COLLAB_LOAD_BALANCER_SIZE_UNIT
+          export DATABASE_MAX_CONNECTIONS=850
           envsubst < crates/collab/k8s/collab.template.yml | kubectl apply -f -
           kubectl -n "$ZED_KUBE_NAMESPACE" rollout status deployment/$ZED_SERVICE_NAME --watch
           echo "deployed ${ZED_SERVICE_NAME} to ${ZED_KUBE_NAMESPACE}"
 
           export ZED_SERVICE_NAME=api
           export ZED_LOAD_BALANCER_SIZE_UNIT=$ZED_API_LOAD_BALANCER_SIZE_UNIT
+          export DATABASE_MAX_CONNECTIONS=60
           envsubst < crates/collab/k8s/collab.template.yml | kubectl apply -f -
           kubectl -n "$ZED_KUBE_NAMESPACE" rollout status deployment/$ZED_SERVICE_NAME --watch
           echo "deployed ${ZED_SERVICE_NAME} to ${ZED_KUBE_NAMESPACE}"

crates/collab/k8s/environments/production.sh 🔗 

@@ -2,5 +2,6 @@ ZED_ENVIRONMENT=production
 RUST_LOG=info
 INVITE_LINK_PREFIX=https://zed.dev/invites/
 AUTO_JOIN_CHANNEL_ID=283
-DATABASE_MAX_CONNECTIONS=250
+# Set DATABASE_MAX_CONNECTIONS max connections in the `deploy_collab.yml`:
+# https://github.com/zed-industries/zed/blob/main/.github/workflows/deploy_collab.yml
 LLM_DATABASE_MAX_CONNECTIONS=25