Fix Firestore build by adding missing build dependencies (#2280)

* Add missing build dependencies

* Update cc list

projects/firestore/Dockerfile

@@ -16,6 +16,6 @@
 
 FROM gcr.io/oss-fuzz-base/base-builder
 MAINTAINER varconst@google.com
-RUN apt-get update && apt-get install -y make autoconf automake libtool wget golang python
+RUN apt-get update && apt-get install -y make autoconf automake libtool wget golang python python-protobuf python-six
 RUN git clone --depth 1 https://github.com/firebase/firebase-ios-sdk.git
 COPY build.sh $SRC/

projects/firestore/project.yaml

@@ -2,7 +2,6 @@ homepage: "https://firebase.google.com/docs/firestore/"
 primary_contact: "varconst@google.com"
 auto_ccs:
   - "varconst@google.com"
-  - "minafarid@google.com"
   - "rgowman@google.com"
 sanitizers:
   - address