docs: Add use citation from Simplified Likelihoods with Linearized Systematics paper (#2094)

* Add use citation from 'Simplified likelihoods using linearized
  systematic uncertainties'.
   - c.f. https://inspirehep.net/literature/2623097

Author: matthewfeickert

docs/bib/use_citations.bib

@@ -1,3 +1,15 @@
+% 2023-01-13
+@article{Berger:2023bat,
+    author = "Berger, Nicolas",
+    title = "{Simplified likelihoods using linearized systematic uncertainties}",
+    eprint = "2301.05676",
+    archivePrefix = "arXiv",
+    primaryClass = "hep-ex",
+    month = "1",
+    year = "2023",
+    journal = ""
+}
+
 % 2022-12-06
 @article{Belle-II:2022yaw,
     author = "Belle II Collaboration",