chore: cut release to publish Docker image with MCP binary

[joshrotenberg]

Summary

The Docker image needs a new release to include the redisctl-mcp binary added in #639.

Current published image only has redisctl. Users trying the Docker MCP option (#647) will hit:

exec: "redisctl-mcp": executable file not found in $PATH

Action

Cut a new release to trigger the Docker workflow and publish an updated image.

Blocked

• docs: Docker as zero-install MCP option #647 - Docker as zero-install MCP option (needs this release)

[joshrotenberg]

Resolved -- release v0.8.0 is in progress, Docker image will include MCP binary.