[v23.1.x] net: Add GNUTLS_E_INVALID_SESSION to is_reconnect_error

[vbotbuildovich]

Backport #11029 to branch v23.1.x. Note that this issue was created as a placeholder, since the original PR's commit(s) could not be automatically cherry-picked.
Here are the commands to execute:

git checkout v23.1.x
git checkout -b vbotbuildovich/backport-11029-v23.1.x-388
git cherry-pick -x bbf8cb3d6f81bab6d530428e46a97504e9d34b36

git push origin vbotbuildovich/backport-11029-v23.1.x-388
gh pr create \
  --title "[v23.1.x] net: Add GNUTLS_E_INVALID_SESSION to is_reconnect_error" \
  --base "v23.1.x" \
  --label "kind/backport" \
  --head "vbotbuildovich/backport-11029-v23.1.x-388" \
  --draft \
  --repo "redpanda-data/redpanda" \
  --reviewer "" \
  --milestone "v23.1.x-next" \
  --body "Backport of PR https://github.com/redpanda-data/redpanda/pull/11029 "

[BenPope]

Fixed by #11032