Unused fonts are bundled / distributed after bslib update

[srfall]

I updated bslib from version 0.5.1 to 0.6.1.9001 and now my pkgdown site contains 70 compressed fonts in deps/bootstrap-5.3.1 while the previous bootstrap-5.2.2 directory contained no font at all.

I'm relatively certain that my site dosn't use 70 different fonts. Is that the expected/ desired behavior?

R version 4.3.2 (2023-10-31 ucrt)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 11 x64 (build 22631)
....
loaded via a namespace (and not attached):
 [1] vctrs_0.6.4     cli_3.6.2       knitr_1.45      rlang_1.1.3
 [5] xfun_0.41       processx_3.8.2  purrr_1.0.1     jsonlite_1.8.8
 [9] glue_1.7.0      rprojroot_2.0.3 htmltools_0.5.7 ps_1.7.5
[13] fansi_1.0.4     rmarkdown_2.25  evaluate_0.23   tibble_3.2.1
[17] fastmap_1.1.1   yaml_2.3.7      lifecycle_1.0.4 memoise_2.0.1
[21] compiler_4.3.2  fs_1.6.3        pkgconfig_2.0.3 digest_0.6.34
[25] R6_2.5.1        utf8_1.2.3      pillar_1.9.0    callr_3.7.3    
[29] magrittr_2.0.3  tools_4.3.2     withr_2.5.0     pkgdown_2.0.7
[33] cachem_1.0.8    desc_1.4.2