Switch to Envoy 1.30.1

[kflynn]

Switch to Envoy 1.30.1 (and pull in some other dependency bumps from main as well)

• Merge master for dependency bumps Update Envoy to 1.30.1.

Update Go to 1.21.10 in the base-python image (which, uh, we don't really use in this branch!).

Update Go packages: golang.org/x/sys v0.15.0 => v0.18.0 google.golang.org/protobuf v1.32.0 => v1.33.0

Update Python packages: blinker 1.7.0 => 1.8.2 durationpy 0.5 => 0.6 flask 3.0.0 => 3.0.3 gunicorn 21.2.0 => 22.0.0 idna 3.4 => 3.7 packaging 23.2 => 24.0 typing-extensions 4.8.0 => 4.11.0 urllib3 2.1.0 => 2.2.1

[kflynn]

It makes me rather happy, actually... 😂