These are a few more minor updated dependencies, mostly in go.mod. I also see that the pubspec now has an update to the flutter version, which should have happened previously along with the flutter upgrade, but it didn't for whatever reason.
We had some old GitHub actions that were using old node versions. This updates them, removes some that have been archived/deprecated, and fixes caching of go dependencies.
This adds a workflow into PRs to build the iOS and Android apps, just to verify that they aren't completely broken / unable to build. They're debug builds, so it won't completely mirror the release build, but that allows us to avoid getting signing keys in the workflow.
This updates flutter to 3.24.1, the latest stable version, and also updates our flutter dependencies to latest.
It targets the latest android sdk, 34, which is required if we want to publish a new version to the Google Play store.
I also needed to make a few adjustments to handle deprecations. The biggest change is that I needed to wrap the main widget in MaterialApp to avoid problems with AdaptiveSwitch in iOS.
