How to manually modify label position in tikz-feynman

Question

I am creating a diagram with tikz-feynman (code below) and two labels overlap each other. I would like to displace the two labels starting $p - q ... and $p + q ... so that they don't overlap. (I appreciate that I could just make the diagram bigger, but I want to locate it in a place where I have limited space.)

This code is compiled by LuaTex in lextlive 2018 https://www.overleaf.com/learn/latex/Feynman_diagrams#Update_(9_November_2022)

\documentclass{article}
\usepackage{tikz}
\usepackage[compat=1.1.0]{tikz-feynman}
\usepackage{bm}
\begin{document}
\feynmandiagram [horizontal=a to b] {
  s0 [particle={$\omega_{\rm in}, \bm{k}{\rm in}$}] -- [photon] i1 [label=above right:{$\bm{p}-\bm{q}, \omega-\Omega$}],
  s1 [particle={$\omega{\rm out}, \bm{k}{\rm out}$}] -- [photon] i2,
  i2 -- [charged scalar] i1,
  i1 -- [fermion] a -- [fermion, edge label={$\bm{p}, \omega$}] i2,
  a -- [gluon, edge label'={$\bm{q}, \Omega$}] b,
  f1 -- [fermion, edge label={$\bm{p}^\prime, \omega^\prime$}] b -- [fermion] f2,
  f1 -- [charged scalar] f2 [label=above left:{$\bm{p}^\prime+\bm{q}, \omega^\prime+\Omega$}],
  f1 -- [photon] l1 [particle={$\omega{\rm out}, \bm{k}{\rm out}$}],
  f2 -- [photon] l2 [particle={$\omega{\rm in}, \bm{k}_{\rm in}$}],
};
\end{document}