v7.1.3 release

FLEXY-0000 bump the workspace version to 7.1.3 (#1172)

main was left at 7.1.2 even though 7.1.3 was published, because the steps that
commit lerna's bump back to the repository were disabled at the time. A public
release reads lerna.json to decide the next version, so a patch release from
7.1.2 would produce 7.1.3 again and npm would reject it as an already-published
version for the eleven packages that did publish.

Bumped by hand rather than with `lerna version`, since that command also tags
and commits, and these versions are already live on npm. The result is the same
shape as lerna's own bump commit 970b13c5 (v7.1.2): 14 files, 65 insertions and
65 deletions, with identical per-file counts.

  lerna.json and all twelve packages/*/package.json version fields
  the twenty internal cross-dependency pins, which --exact keeps exact
  the twelve workspace entries in package-lock.json

@twilio/flex-ui stays at "^2"; it is not one of ours.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>