VIS-1064: fix PPT exporting issue (#17)

* Candidate fix

* Bump version

Author: JustinCCYap

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: plotly
 Title: Create Interactive Web Graphics via 'plotly.js'
-Version: 4.9.4.2
+Version: 4.9.4.3
 Authors@R: c(person("Carson", "Sievert", role = c("aut", "cre"),
     email = "[email protected]", comment = c(ORCID = "0000-0002-4958-2844")),
     person("Chris", "Parmer", role = "aut",