update travis config

see b4259ff in platform for details.

Author: ewollesen

.travis.yml

@@ -18,8 +18,8 @@ cache:
     - $HOME/.cache/go-build
 
 before_install:
-  - sudo apt update
-  - sudo apt install -y docker-buildx mongodb-org=${MONGODB} mongodb-org-database=${MONGODB} mongodb-org-server=${MONGODB} mongodb-mongosh=${MONGOSH} mongodb-org-mongos=${MONGODB} mongodb-org-tools=${MONGODB}
+  - sudo apt-get update
+  - sudo apt-get install --allow-downgrades -y docker-buildx-plugin mongodb-org=${MONGODB} mongodb-org-database=${MONGODB} mongodb-org-server=${MONGODB} mongodb-mongosh=${MONGOSH} mongodb-org-mongos=${MONGODB} mongodb-org-tools
   - mkdir /tmp/data
   - /usr/bin/mongod --dbpath /tmp/data --bind_ip 127.0.0.1 --replSet rs0 --logpath ${PWD}/mongod.log &> /dev/null &
   - until nc -z localhost 27017; do echo Waiting for MongoDB; sleep 1; done
@@ -28,8 +28,8 @@ before_install:
 addons:
   apt:
     sources:
-      - sourceline: 'deb https://repo.mongodb.org/apt/ubuntu jammy/mongodb-org/7.0 multiverse'
-        key_url: 'https://pgp.mongodb.com/server-7.0.asc'
+      - sourceline: 'deb https://repo.mongodb.org/apt/ubuntu jammy/mongodb-org/6.0 multiverse'
+        key_url: 'https://pgp.mongodb.com/server-6.0.asc'
 
 script:
   - ./build.sh