Use commit data to infer dependency groups instead of the PR body

src/dependabot/update_metadata.ts

@@ -32,7 +32,7 @@ export async function parse (commitMessage: string, body: string, branchName: st
   const bumpFragment = commitMessage.match(/^Bumps .* from (?<from>v?\d[^ ]*) to (?<to>v?\d[^ ]*)\.$/m)
   const updateFragment = commitMessage.match(/^Update .* requirement from \S*? ?(?<from>v?\d\S*) to \S*? ?(?<to>v?\d\S*)$/m)
   const yamlFragment = commitMessage.match(/^-{3}\n(?<dependencies>[\S|\s]*?)\n^\.{3}\n/m)
-  const groupName = body.match(/^Bumps the (?<name>\S*) group with/m)
+  const groupName = commitMessage.match(/^Bumps the (?<name>\S*) group with/m)
   const newMaintainer = !!body.match(/Maintainer changes/m)
   const lookupFn = lookup ?? (() => Promise.resolve({ alertState: '', ghsaId: '', cvss: 0 }))
   const scoreFn = getScore ?? (() => Promise.resolve(0))