Update composer Docker tag to v2.5.5

This MR contains the following updates:

Package	Type	Update	Change
composer	final	minor	2.2.9 -> 2.5.5
composer	stage	minor	2.2.9 -> 2.5.5

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Dockerfile

@@ -3,7 +3,7 @@ COPY modsec_logger.go /src/modsec_logger.go
 WORKDIR /src
 RUN go build -tags netgo -o modsec_logger modsec_logger.go
 
-FROM composer:2.2.9 as build
+FROM composer:2.5.5 as build
 
 ADD . /build
 WORKDIR /build