Update switcher versions and make 0.4.0 stable #3294

Job	Run time
format	1m 11s
lint	57s
mypy (./packages/autogen-core)	2m 11s
codecov (./packages/autogen-core)	58s
codecov (./packages/autogen-magentic-one)	1m 51s
codecov (./packages/autogen-ext)	2m 48s
mypy (./packages/autogen-magentic-one)	1m 3s
mypy (./packages/agbench)	54s
codecov (./packages/autogen-agentchat)	1m 13s
mypy (./packages/autogen-ext)	1m 56s
docs (./packages/autogen-core)	1m 33s
mypy (./packages/autogen-agentchat)	1m 10s
docs-example-check (./packages/autogen-core)	2m 41s
mypy (./packages/magentic-one-cli)	52s
pyright (./packages/autogen-core)	1m 0s
test (./packages/autogen-core)	1m 10s
test (./packages/autogen-magentic-one)	1m 17s
pyright (./packages/autogen-magentic-one)	55s
test (./packages/autogen-ext)	2m 53s
pyright (./packages/agbench)	55s
test (./packages/autogen-agentchat)	1m 13s
pyright (./packages/autogen-ext)	58s
pyright (./packages/autogen-agentchat)	59s
check-proto-changes-python	1m 5s
pyright (./packages/magentic-one-cli)	51s
markdown-code-lint	1m 55s
samples-code-check	55s
	37m 24s

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