build(deps): bump golang.org/x/net from 0.19.0 to 0.21.0 #173

Job	Run time
Generate Code	1m 10s
Go Lint	1m 34s
Rego PR checks	2m 24s
WASM	8s
Go Test (linux)	4m 39s
Go Test (darwin)	7m 13s
Check Generated	27s
Go Build (linux amd64)	2m 34s
Go compat build/test (ubuntu-22.04, 1.19)	3m 35s
Go Build (linux arm64)	2m 12s
Go Race Detector	5m 39s
Go compat build/test (macos-latest, 1.19)	7m 3s
Go Build (windows)	2m 32s
Go Build (darwin)	3m 45s
smoke-test-binaries (ubuntu-22.04, opa_linux_amd64)	13s
docker image smoke test	40s
smoke-test-binaries (ubuntu-22.04, opa_linux_amd64_static, disabled)	11s
smoke-test-binaries (macos-latest, opa_darwin_amd64)	33s
smoke-test-binaries (windows-latest, opa_windows_amd64.exe)	39s
	47m 11s

Provide feedback