Bump material from 1.3.0 to 1.4.0

Bumps [material](https://github.com/material-components/material-components-android) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/material-components/material-components-android/releases)
- [Commits](https://github.com/material-components/material-components-android/compare/1.3.0...1.4.0)

---
updated-dependencies:
- dependency-name: com.google.android.material:material
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle

@@ -95,7 +95,7 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.3.0'
     implementation 'androidx.preference:preference:1.1.1'
     implementation 'androidx.documentfile:documentfile:1.0.1'
-    implementation 'com.google.android.material:material:1.3.0'
+    implementation 'com.google.android.material:material:1.4.0'
     implementation 'com.android.support.constraint:constraint-layout:2.0.4'
 
     androidTestImplementation 'androidx.test:core:1.4.0'