fix: Use DST-aware timezone offset calculation

Change timezoneOffset from rawOffset to getOffset(currentTime) to properly
account for Daylight Saving Time. The rawOffset only returns the base UTC
offset without DST adjustment, which gives incorrect results during DST
periods.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: oschwald

device-sdk/src/main/java/com/maxmind/device/collector/DeviceDataCollector.kt

@@ -140,8 +140,8 @@ internal class DeviceDataCollector(
             telephony = telephonyCollector.collect(),
             fonts = fontCollector.collect(),
             locale = collectSafe(LOCALE_INFO_FALLBACK) { collectLocaleInfo() },
-            // Timezone offset in minutes
-            timezoneOffset = TimeZone.getDefault().rawOffset / 60000,
+            // Timezone offset in minutes (uses getOffset to account for DST)
+            timezoneOffset = TimeZone.getDefault().getOffset(System.currentTimeMillis()) / 60000,
             deviceTime = System.currentTimeMillis(),
             webViewUserAgent = webViewCollector.collectUserAgent(),
         )