build: increase timeout for resultstore build uploads (#20027)

We upload build results to Google Cloud `ResultStore`. Sometimes this
seems to fail though and Bazel CI jobs exit red. This could be due to
BES servers being slow, or servers being unreliably. Given that remote
executors from GCP are behaving fine though, we try increasing the
timeout first. We can disable the uploading if it doesn't get better.

Author: devversion

.bazelrc

@@ -94,7 +94,7 @@ build:remote --extra_toolchains=@rbe_default//config:cc-toolchain
 
 # Setup Build Event Service
 build:remote --bes_backend=buildeventservice.googleapis.com
-build:remote --bes_timeout=30s
+build:remote --bes_timeout=60s
 build:remote --bes_results_url="https://source.cloud.google.com/results/invocations/"
 
 # Set remote caching settings