Update alpine Docker tag to v3.23.0

Author: renovate[bot]

Dockerfile

@@ -5,6 +5,6 @@ COPY . .
 RUN --mount=type=cache,target=/root/.cache/go-build --mount=type=cache,target=/root/go/pkg \
   go build -o /bin/authserver ./cmd
 
-FROM alpine:3.22.2@sha256:4b7ce07002c69e8f3d704a9c5d6fd3053be500b7f1c69fc0d80990c2ad8dd412
+FROM alpine:3.23.0@sha256:51183f2cfa6320055da30872f211093f9ff1d3cf06f39a0bdb212314c5dc7375
 COPY --from=builder /bin/authserver /usr/local/bin/
 ENTRYPOINT [ "/usr/local/bin/authserver" ]