Bump material from 1.7.0 to 1.8.0

Bumps [material](https://github.com/material-components/material-components-android) from 1.7.0 to 1.8.0.
- [Release notes](https://github.com/material-components/material-components-android/releases)
- [Commits](material-components/material-components-android@1.7.0...1.8.0)

---
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>

Author: dependabot[bot]

MPChartExample/build.gradle

@@ -26,7 +26,7 @@ android {
 
 dependencies {
     implementation "androidx.appcompat:appcompat:1.6.0"
-    implementation 'com.google.android.material:material:1.7.0'
+    implementation 'com.google.android.material:material:1.8.0'
     implementation project(':MPChartLib')
 
     androidTestImplementation "androidx.test.ext:junit-ktx:1.1.5"