[GH Actions] Add gradle.jvmargs args to ./gradlew bundleRelease

Summary:
This is kind of a longshot, but noticed that the disk usage issue was accompanied by a stackoverflow issue during some sort of final signing step. This issue doesn't replicate on my fork because I didn't include the keys necessary for signing.

I also noticed that the disk usage issue specified that the error occured when trying to write to some sort of build log file.

Maybe there's a stack overflow issue that's causing a lot of logging that's eating up disk space? It's a stretch, but figure it doesn't hurt to bump `gradle.jvmargs` to possibly reduce chance of stack overflow?

Test Plan: Land and see what happens.

Reviewers: ashoat, ginsu, marcin, tomek, jon

Reviewed By: ashoat

Differential Revision: https://phab.comm.dev/D8718

.github/workflows/android_ci.yml

@@ -52,7 +52,7 @@ jobs:
         working-directory: ./native/android
         env:
           ANDROID_SIGNING_PASSWORD: ${{secrets.ANDROID_SIGNING_PASSWORD}}
-        run: ./gradlew bundleRelease
+        run: ./gradlew bundleRelease "-Dorg.gradle.jvmargs=-Xmx6g -XX:MaxMetaspaceSize=6g"
 
       - name: Disk Usage
         run: df -h

.github/workflows/android_release.yml

@@ -53,7 +53,7 @@ jobs:
         working-directory: ./native/android
         env:
           ANDROID_SIGNING_PASSWORD: ${{secrets.ANDROID_SIGNING_PASSWORD}}
-        run: ./gradlew bundleRelease
+        run: ./gradlew bundleRelease "-Dorg.gradle.jvmargs=-Xmx6g -XX:MaxMetaspaceSize=6g"
 
       - name: Save PLAY_STORE_PUBLISHING_KEY to file
         working-directory: ./native/android