Bump firebase_crashlytics from 3.1.1 to 3.3.4

Bumps [firebase_crashlytics](https://github.com/firebase/flutterfire/tree/master/packages/firebase_crashlytics) from 3.1.1 to 3.3.4.
- [Release notes](https://github.com/firebase/flutterfire/releases)
- [Changelog](https://github.com/firebase/flutterfire/blob/master/CHANGELOG.md)
- [Commits](https://github.com/firebase/flutterfire/commits/firebase_crashlytics-v3.3.4/packages/firebase_crashlytics)

---
updated-dependencies:
- dependency-name: firebase_crashlytics
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

pubspec.lock

@@ -13,10 +13,10 @@ packages:
     dependency: transitive
     description:
       name: _flutterfire_internals
-      sha256: "6a0ad72b2bcdb461749e40c01c478212a78db848dfcb2f10f2a461988bc5fb29"
+      sha256: "5dce45a06d386358334eb1689108db6455d90ceb0d75848d5f4819283d4ee2b8"
       url: "https://pub.dev"
     source: hosted
-    version: "1.1.1"
+    version: "1.3.4"
   adaptive_breakpoints:
     dependency: "direct main"
     description:
@@ -189,10 +189,10 @@ packages:
     dependency: "direct main"
     description:
       name: firebase_core
-      sha256: e9b36b391690cf329c6fb1de220045e97c13784c303820cd33962319580a56c6
+      sha256: "2e9324f719e90200dc7d3c4f5d2abc26052f9f2b995d3b6626c47a0dfe1c8192"
       url: "https://pub.dev"
     source: hosted
-    version: "2.13.1"
+    version: "2.15.0"
   firebase_core_platform_interface:
     dependency: transitive
     description:
@@ -205,26 +205,26 @@ packages:
     dependency: transitive
     description:
       name: firebase_core_web
-      sha256: "8c0f4c87d20e2d001a5915df238c1f9c88704231f591324205f5a5d2a7740a45"
+      sha256: "0fd5c4b228de29b55fac38aed0d9e42514b3d3bd47675de52bf7f8fccaf922fa"
       url: "https://pub.dev"
     source: hosted
-    version: "2.5.0"
+    version: "2.6.0"
   firebase_crashlytics:
     dependency: "direct main"
     description:
       name: firebase_crashlytics
-      sha256: bfc662a87df622e7d95c360536a4999f06474f53eda5a219af9e29193d498529
+      sha256: "3607b46342537f98df18b130b6f5ab25cee6981a3a782e1a7b121d04dfea3caa"
       url: "https://pub.dev"
     source: hosted
-    version: "3.1.1"
+    version: "3.3.4"
   firebase_crashlytics_platform_interface:
     dependency: transitive
     description:
       name: firebase_crashlytics_platform_interface
-      sha256: b9c7b8498c877a2901ad323fc92c10f672be1597bc82d08f121f6228f321a7e0
+      sha256: c63abeb87b18f6e6d4bf6bb3977f15d2d9281a049d93fe098e83e56dcbf7da06
       url: "https://pub.dev"
     source: hosted
-    version: "3.4.1"
+    version: "3.6.4"
   firebase_performance:
     dependency: "direct main"
     description: