Increase JVM memory for gradle builds (#236)

Updates to increase amount of memory available during CI builds. I think
this will help with the intermittent `A failure occurred while executing
"com.android.build.gradle.tasks.PackageAndroidArtifact$IncrementalSplitterRunnable`
CI errors.

No user facing changes

.github/workflows/main.yml

@@ -16,6 +16,7 @@ concurrency:
 
 env:
   BRANCH_NAME: ${{ github.ref_name }}
+  GRADLE_OPTS: "-Dorg.gradle.jvmargs='-Xmx4g -XX:MaxMetaspaceSize=512m'"
 
 jobs:
   build:
@@ -55,7 +56,7 @@ jobs:
           KEY_STORE_PASSWORD: "${{ secrets.KEY_STORE_PASSWORD }}"
           SIGNING_KEY: "${{ secrets.SIGNING_KEY }}"
         run: |
-          ./gradlew clean assembleRelease assembleDebug
+          ./gradlew clean assembleRelease assembleDebug --no-daemon
       - name: Verify signatures
         run: |
           echo "Verify APK signatures"