Automatic rebaseline of codesize expectations. NFC

This is an automatic change generated by tools/maint/rebaseline_tests.py.

The following (2) test expectation files were updated by
running the tests with `--rebaseline`:

```
code_size/test_codesize_minimal_pthreads.json: 27251 => 27205 [-46 bytes / -0.17%]
code_size/test_codesize_minimal_pthreads_memgrowth.json: 27679 => 27633 [-46 bytes / -0.17%]

Average change: -0.17% (-0.17% - -0.17%)
```

Author: kleisauke

test/code_size/test_codesize_minimal_pthreads.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 7659,
-  "a.out.js.gz": 3776,
+  "a.out.js": 7613,
+  "a.out.js.gz": 3753,
   "a.out.nodebug.wasm": 19592,
   "a.out.nodebug.wasm.gz": 9060,
-  "total": 27251,
-  "total_gz": 12836,
+  "total": 27205,
+  "total_gz": 12813,
   "sent": [
     "a (memory)",
     "b (emscripten_get_now)",

test/code_size/test_codesize_minimal_pthreads_memgrowth.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 8086,
-  "a.out.js.gz": 3977,
+  "a.out.js": 8040,
+  "a.out.js.gz": 3953,
   "a.out.nodebug.wasm": 19593,
   "a.out.nodebug.wasm.gz": 9061,
-  "total": 27679,
-  "total_gz": 13038,
+  "total": 27633,
+  "total_gz": 13014,
   "sent": [
     "a (memory)",
     "b (emscripten_get_now)",