update ngx_brotli version to v1.0.0rc

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Author: Zoey2936

Dockerfile

@@ -11,7 +11,7 @@ ARG MODSEC_VER=v3.0.12
 ARG DTR_VER=1.25.1
 ARG RCP_VER=1.25.3
 
-ARG NB_VER=master
+ARG NB_VER=v1.0.0rc
 ARG NF_VER=master
 ARG HMNM_VER=v0.37
 ARG NJS_VER=0.8.3