chore: bump version to 0.4.0

Author: corvid-agent

plugin.toml

@@ -1,6 +1,6 @@
 [plugin]
 name = "fledge-plugin-github"
-version = "0.3.0"
+version = "0.4.0"
 description = "GitHub commands for fledge — view CI checks, issues, and pull requests via the gh CLI"
 author = "0xLeif"
 license = "MIT"
@@ -9,3 +9,4 @@ license = "MIT"
 name = "github"
 description = "GitHub commands (checks, issues, prs) via the gh CLI"
 binary = "bin/fledge-github"
+