Bump otelVersion from 1.19.0 to 1.20.0 (#411)

Bumps `otelVersion` from 1.19.0 to 1.20.0.

Updates `opentelemetry-bom` from 1.19.0 to 1.20.0
- [Release notes](https://github.com/open-telemetry/opentelemetry-java/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-java/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-java@v1.19.0...v1.20.0)

Updates `opentelemetry-instrumentation-api` from 1.19.0 to 1.20.0
- [Release notes](https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-java-instrumentation@v1.19.0...v1.20.0)

---
updated-dependencies:
- dependency-name: io.opentelemetry:opentelemetry-bom
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.opentelemetry.instrumentation:opentelemetry-instrumentation-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

sample-app/build.gradle.kts

@@ -49,7 +49,7 @@ android {
     }
 }
 
-val otelVersion = "1.19.0"
+val otelVersion = "1.20.0"
 val otelAlphaVersion = "$otelVersion-alpha"
 
 dependencies {

splunk-otel-android-volley/build.gradle.kts

@@ -42,7 +42,7 @@ android {
     }
 }
 
-val otelVersion = "1.19.0"
+val otelVersion = "1.20.0"
 val otelAlphaVersion = "$otelVersion-alpha"
 
 dependencies {

splunk-otel-android/build.gradle.kts

@@ -40,7 +40,7 @@ android {
     }
 }
 
-val otelVersion = "1.19.0"
+val otelVersion = "1.20.0"
 val otelAlphaVersion = "$otelVersion-alpha"
 
 dependencies {