Bump room_version from 2.6.1 to 2.7.0 in /13_room

Bumps `room_version` from 2.6.1 to 2.7.0.

Updates `androidx.room:room-runtime` from 2.6.1 to 2.7.0

Updates `androidx.room:room-compiler` from 2.6.1 to 2.7.0

---
updated-dependencies:
- dependency-name: androidx.room:room-runtime
  dependency-version: 2.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: androidx.room:room-compiler
  dependency-version: 2.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

13_room/app/build.gradle

@@ -50,7 +50,7 @@ dependencies {
     def lifecycle_version = "2.8.7"
     def gson_version = "2.12.1"
     def nav_version = "2.8.9"
-    def room_version = "2.6.1"
+    def room_version = "2.7.0"
 
     implementation "androidx.core:core-ktx:$core_version"
     implementation "androidx.appcompat:appcompat:$appcompat_version"