Update some libraries

[TacoTheDank]

What is it?

• Bugfix (user facing)
• Feature (user facing)
• Codebase improvement (dev facing)
• Meta improvement to the project (dev facing)

Description of the changes in your PR

• Update AGP 7.0.2 -> 7.0.3 (changelog)
• Update Kotlin 1.5.30 -> 1.5.31 (changelog)
• Update LeakCanary 2.5 -> 2.7 (changelog)
• Update AndroidX Media 1.4.2 -> 1.4.3 (changelog)

Anything worth implementing from LeakCanary? There's a few new detections for leaks that've been added.

APK testing

The APK can be found by going to the "Checks" tab below the title. On the left pane, click on "CI", scroll down to "artifacts" and click "app" to download the zip file which contains the debug APK of this PR.

Due diligence

• I read the contribution guidelines.

[TacoTheDank]

Also, why is BaseFragment watched for leaks? I need to have a specific statement to be able to fix the deprecation.

Here's the context:

@Deprecated(
      "Add description parameter explaining why an object is watched to help understand leak traces.",
      replaceWith = ReplaceWith(
          "watch(watchedObject, \"Explain why this object should be garbage collected soon\")"
      )
  )
  @Synchronized fun watch(watchedObject: Any) {
    watch(watchedObject, "")
  }

[litetex]

@TacoTheDank

I converted the PR to a draft as there are build problems.

PS: Regarding #7263 (comment)

Also, why is BaseFragment watched for leaks? I need to have a specific statement to be able to fix the deprecation.

No idea but it was added with 0cae58c#diff-b4f682e5acf9f776d048319b275755bb062663781ae2d667f33973bf5eab793aR88

[TacoTheDank]

LeakCanary can be updated separately. I don't really feel like letting it hold up the rest of the PR lol.

[litetex]

LGTM

Tested it roughly, no problems