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`:

```
codesize/test_codesize_minimal_pthreads.json: 26419 => 26419 [+0 bytes / +0.00%]
codesize/test_codesize_minimal_pthreads_memgrowth.json: 26829 => 26829 [+0 bytes / +0.00%]

Average change: +0.00% (+0.00% - +0.00%)
```

Author: kleisauke

test/codesize/test_codesize_minimal_pthreads.json

@@ -2,9 +2,9 @@
   "a.out.js": 7372,
   "a.out.js.gz": 3594,
   "a.out.nodebug.wasm": 19047,
-  "a.out.nodebug.wasm.gz": 8795,
+  "a.out.nodebug.wasm.gz": 8796,
   "total": 26419,
-  "total_gz": 12389,
+  "total_gz": 12390,
   "sent": [
     "a (memory)",
     "b (exit)",

test/codesize/test_codesize_minimal_pthreads_memgrowth.json

@@ -2,9 +2,9 @@
   "a.out.js": 7781,
   "a.out.js.gz": 3797,
   "a.out.nodebug.wasm": 19048,
-  "a.out.nodebug.wasm.gz": 8796,
+  "a.out.nodebug.wasm.gz": 8797,
   "total": 26829,
-  "total_gz": 12593,
+  "total_gz": 12594,
   "sent": [
     "a (memory)",
     "b (exit)",