Workaround for bullseye release CI blockage

Switch out `apt-get update` commands that are run in CI to being
`apt-get --allow-releaseinfo-change update` to ignore the error on new
release change.

Workaround for googleforgames#2224 until we can upgrade everything to bullseye.

build/build-sdk-images/cpp/Dockerfile

@@ -14,7 +14,7 @@
 ARG BASE_IMAGE=agones-build-sdk-base:latest
 FROM $BASE_IMAGE
 
-RUN apt-get update && \
+RUN apt-get --allow-releaseinfo-change update && \
     apt-get install -y zip wget clang-format && \
     apt-get clean
 

build/build-sdk-images/csharp/Dockerfile

@@ -18,7 +18,7 @@ FROM $BASE_IMAGE
 # This should contains tooling required to generate GRPC code, build (if distribution is required) 
 # and test your integration.
 
-RUN  apt-get update \
+RUN apt-get --allow-releaseinfo-change update && \
     && apt-get install -y wget
 
 RUN apt-get update \

build/build-sdk-images/go/Dockerfile

@@ -14,7 +14,7 @@
 ARG BASE_IMAGE=agones-build-sdk-base:latest
 FROM $BASE_IMAGE
 
-RUN apt-get update && \
+RUN apt-get --allow-releaseinfo-change update && \
     apt-get install -y wget jq && \
     apt-get clean
 

build/build-sdk-images/restapi/Dockerfile

@@ -14,7 +14,7 @@
 ARG BASE_IMAGE=agones-build-sdk-base:latest
 FROM $BASE_IMAGE
 
-RUN apt-get update && \
+RUN apt-get --allow-releaseinfo-change update && \
     apt-get install -y wget jq && \
     apt-get clean
 

build/build-sdk-images/rust/Dockerfile

@@ -14,7 +14,7 @@
 ARG BASE_IMAGE=agones-build-sdk-base:latest
 FROM $BASE_IMAGE
 
-RUN apt-get update && \
+RUN apt-get --allow-releaseinfo-change update && \
     apt-get install -y wget && \
     apt-get clean