[canary] Update SDKInfo.kt version to 2025.3.0-canary.6

Author: zztkm

sora-android-sdk/src/main/kotlin/jp/shiguredo/sora/sdk/util/SDKInfo.kt

@@ -6,7 +6,7 @@ import org.webrtc.WebrtcBuildVersion
 
 class SDKInfo {
     companion object {
-        const val VERSION = "2025.3.0-canary.5"
+        const val VERSION = "2025.3.0-canary.6"
 
         fun sdkInfo(): String = "Sora Android SDK $VERSION (${BuildConfig.REVISION})"