Update mwader/static-ffmpeg Docker tag to v8

Author: renovate[bot]

Dockerfile

@@ -3,7 +3,7 @@ FROM eclipse-temurin:25-alpine AS builder
 WORKDIR /app
 
 # bump: ffmpeg /static-ffmpeg:([\d.]+)/ docker:mwader/static-ffmpeg|~7.0
-COPY --from=mwader/static-ffmpeg:7.0.2 /ff* /usr/bin/
+COPY --from=mwader/static-ffmpeg:8.0.1 /ff* /usr/bin/
 
 COPY . .
 RUN --mount=type=cache,target=/root/.gradle ./gradlew check installDist --no-daemon