ci: fix matrix usage

Author: davidtwco

.github/workflows/main.yml

@@ -96,10 +96,13 @@ jobs:
         - thumbv7em-none-eabi
         - thumbv7em-none-eabihf
         - loongarch64-unknown-linux-gnu
+        - wasm32-wasip1
 
         # macOS targets
         - x86_64-apple-darwin
+        - x86_64-apple-ios-macabi
         - aarch64-apple-darwin
+        - aarch64-apple-ios-macabi
         # FIXME: gh-actions build environment doesn't have linker support
         # - i686-apple-darwin
 
@@ -110,6 +113,9 @@ jobs:
         - x86_64-pc-windows-gnu
         # - i686-pc-windows-gnu:
 
+        # Every target in the `include` list must also be in the `target` list
+        # above so that the `os` key is added to each of the matrix variations rather
+        # than being added as an additional job with an unset `profile`.
         include:
         - target: i686-unknown-linux-gnu
           os: ubuntu-latest