v0.3.1 container includes v0.4.0.dev0 GuideLLM python package

[strangiato]

Describe the bug
The v0.3.1 container contains the v0.4.0.dev0 version of GuideLLM.

Expected behavior
Container tag should match the version of GuideLLM that it includes

Environment
N/A

To Reproduce

podman pull ghcr.io/vllm-project/guidellm:v0.3.1
podman run -it ghcr.io/vllm-project/guidellm:v0.3.1 --version

Output

guidellm version: 0.4.0.dev0

Errors
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Additional context
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