chore(ci): downgrade runners to free tier (#10248)

To avoid burning Azure credits, we move the runners back down to the
free tier. Now that caching is properly set up, this should incur only a
minor increase in CI time.

scripts/build/lib.sh

@@ -12,9 +12,6 @@ function setup_runner() {
     # Use the latest version of Xcode - matches what we typically use for development
     sudo xcode-select --switch "$(ls -d /Applications/Xcode*${XCODE_MAJOR}*.app | sort -V | tail -n 1)"
 
-    # The GitHub runners stopped including the iOS SDK
-    xcodebuild -downloadPlatform iOS
-
     profiles_path="$HOME/Library/Developer/Xcode/UserData/Provisioning Profiles"
     keychain_pass=$(openssl rand -base64 32)
     keychain_path="$(mktemp -d)/app-signing.keychain-db"

scripts/tests/perf/relayed-udp-client2server.sh

@@ -8,7 +8,7 @@ install_iptables_drop_rules
 docker compose exec --env RUST_LOG=info -it client /bin/sh -c 'iperf3 \
   --time 30 \
   --udp \
-  --bandwidth 450M \
+  --bandwidth 300M \
   --client 172.20.0.110 \
   --json' >>"${TEST_NAME}.json"
 

scripts/tests/perf/relayed-udp-server2client.sh

@@ -9,7 +9,7 @@ docker compose exec --env RUST_LOG=info -it client /bin/sh -c 'iperf3 \
   --time 30 \
   --reverse \
   --udp \
-  --bandwidth 450M \
+  --bandwidth 300M \
   --client 172.20.0.110 \
   --json' >>"${TEST_NAME}.json"