upgrade fontawesome, fix some typst

some deprecation warnings. i am less sure about the s/amount/abs change but was getting the error

    error: length does not contain field amount
       ┌─ docs/smoke-all/typst/callout.typ:38:32
       │
    38 │     fields.below = fields.below.amount
       │                                 ^^^^^^

can't find any documentation of amount so i'm hoping abs was meant here

Author: gordonwoodhull

src/resources/filters/customnodes/callout.lua

@@ -224,7 +224,7 @@ function _callout_main()
       return
     end
     included_font_awesome = true
-    quarto.doc.include_text("in-header", "#import \"@preview/fontawesome:0.1.0\": *")
+    quarto.doc.include_text("in-header", "#import \"@preview/fontawesome:0.5.0\": *")
   end
 
   _quarto.ast.add_renderer("Callout", function(_)

src/resources/formats/typst/pandoc/quarto/definitions.typ

@@ -35,17 +35,17 @@
   if fields.at("below", default: none) != none {
     // TODO: this is a hack because below is a "synthesized element"
     // according to the experts in the typst discord...
-    fields.below = fields.below.amount
+    fields.below = fields.below.abs
   }
   return block.with(..fields)(new_content)
 }
 
 #let empty(v) = {
-  if type(v) == "string" {
+  if type(v) == str {
     // two dollar signs here because we're technically inside
     // a Pandoc template :grimace:
     v.matches(regex("^\\s*$$")).at(0, default: none) != none
-  } else if type(v) == "content" {
+  } else if type(v) == content {
     if v.at("text", default: none) != none {
       return empty(v.text)
     }
@@ -108,7 +108,7 @@
 // callout rendering
 // this is a figure show rule because callouts are crossreferenceable
 #show figure: it => {
-  if type(it.kind) != "string" {
+  if type(it.kind) != str {
     return it
   }
   let kind_match = it.kind.matches(regex("^quarto-callout-(.*)")).at(0, default: none)