- Kubernetes is now built with go 1.20.1 ([#115828](https://github.com/kubernetes/kubernetes/pull/115828), [@cpanato](https://github.com/cpanato)) [SIG Release and Testing]
- Kubernetes is now built with go 1.20.2 ([#116404](https://github.com/kubernetes/kubernetes/pull/116404), [@cpanato](https://github.com/cpanato)) [SIG Release and Testing]

- Kubernetes is now built with go 1.21.7
  - update setcap/debian-base to bookworm-v1.0.1
  - update distroless-iptables to v0.4.5 ([#123228](https://github.com/kubernetes/kubernetes/pull/123228), [@cpanato](https://github.com/cpanato)) [SIG API Machinery, Architecture, Release and Testing]

### Bug or Regression

- Promote PodHostIPs condition to beta. ([#120257](https://github.com/kubernetes/kubernetes/pull/120257), [@wzshiming](https://github.com/wzshiming)) [SIG Network, Node and Testing]
- Promote PodHostIPs condition to beta. ([#121477](https://github.com/kubernetes/kubernetes/pull/121477), [@wzshiming](https://github.com/wzshiming)) [SIG Network and Testing]

- Kubernetes is now built with go 1.21.7
  - update distroless-iptables to v0.4.5 ([#123230](https://github.com/kubernetes/kubernetes/pull/123230), [@cpanato](https://github.com/cpanato)) [SIG Release and Testing]

### Bug or Regression

* Update docs for testing FastAPI. Include using `POST`, sending JSON, testing headers, etc. New documentation: [Testing](https://fastapi.tiangolo.com/tutorial/testing/#testing-extended-example). PR [#271](https://github.com/tiangolo/fastapi/pull/271).

### SIG Scalability

[SIG Scalability][] is responsible for scalability testing, measuring and
improving system performance, and answering questions related to scalability.

For the 1.8 release, SIG Scalability focused on automating large cluster
scalability testing in a continuous integration (CI) environment. The SIG
defined a concrete process for scalability testing, created

  // If true the pod's hostname will be configured as the pod's FQDN, rather than the leaf name (the default).
  // In Linux containers, this means setting the FQDN in the hostname field of the kernel (the nodename field of struct utsname).
  // In Windows containers, this means setting the registry value of hostname for the registry key HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters to FQDN.

x[i], i = 2, 1  // set x[0] = 2, i = 1

x[0], x[0] = 1, 2  // set x[0] = 1, then x[0] = 2 (so x[0] == 2 at end)

x[1], x[3] = 4, 5  // set x[1] = 4, then panic setting x[3] = 5.

type Point struct { x, y int }
var p *Point
x[2], p.x = 6, 7  // set x[2] = 6, then panic setting p.x = 7

i = 2
x = []int{3, 5, 7}
for i, x[i] = range x {  // set i, x[2] = 0, x[0]
	break
}