chore(deps): update dependency rules_apple to v3.20.1 (#1543)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| rules_apple | bazel_dep | minor | `3.16.1` -> `3.20.1` |
| rules_apple | bazel_dep | minor | `3.17.1` -> `3.20.1` |

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examples/objc_code/MODULE.bazel

@@ -25,7 +25,7 @@ bazel_dep(
 )
 bazel_dep(
     name = "rules_apple",
-    version = "3.16.1",
+    version = "3.20.1",
     repo_name = "build_bazel_rules_apple",
 )
 

examples/xcmetrics_example/MODULE.bazel

@@ -20,7 +20,7 @@ bazel_dep(
 )
 bazel_dep(
     name = "rules_apple",
-    version = "3.16.1",
+    version = "3.20.1",
     repo_name = "build_bazel_rules_apple",
 )