chore(script): Update work/labour references to newest ILO

ILO Resolution 2023 on informal work includes updates to the approach to formal/informal
and work/labour distinctions, especially those of the 'informal economy' and 'informal
market economy'. This commit integrates them.

03-supplementary_data/lib.bib

@@ -13951,6 +13951,13 @@ does NOT look at WoW;}
   institution = {{International Labour Organization}}
 }
 
+@techreport{ILO2023c,
+  title = {Resolution Concerning Statistics on the Informal Economy},
+  author = {{ILO}},
+  year = {2023},
+  institution = {{International Labour Organization}}
+}
+
 @article{Im2022,
   title = {Who Gets Labour Market Training? {{Access}} Biases of Social Investment in {{Finland}}},
   author = {Im, Zhen Jie and Shin, Young-Kyu},