Update .spi.yml

finestructure · stackotter · commit e45eafdb7856 · 2023-06-30T18:23:03.000+10:00
Fix doc build
diff --git a/.spi.yml b/.spi.yml
@@ -2,3 +2,4 @@ version: 1
 builder:
   configs:
   - documentation_targets: [MacroToolkit]
+    swift_version: 5.9
