Bump V8 to 14.5

[ketanhwr]

Patch 29 has been upstreamed: https://chromium-review.googlesource.com/c/v8/v8/+/7124103

[codspeed-hq]

Merging this PR will degrade performance by 40.1%

⚡ 12 improved benchmarks
❌ 5 regressed benchmarks
✅ 53 untouched benchmarks
⏩ 129 skipped benchmarks¹

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	JsString_Utf8Length_Utf16_NonFlat_1024	16.1 µs	10.8 µs	+48.36%
⚡	Encode_TwoByte_8192[TextEncoder][0/2/8192]	146.1 ms	119.4 ms	+22.35%
⚡	JsString_Utf8Length_Utf16_NonFlat_8192	73.7 µs	25 µs	×2.9
⚡	Encode_TwoByte_256[TextEncoder][0/2/256]	7 ms	6.4 ms	+9.94%
⚡	Encode_TwoByte_1024[TextEncoder][0/2/1024]	19.5 ms	16.4 ms	+19.28%
❌	JsString_Utf8Length_Latin1_Flat_256	1.7 µs	2 µs	-13.99%
⚡	JsString_Utf8Length_Latin1_Flat_1024	4.6 µs	3.2 µs	+43.85%
⚡	JsString_Utf8Length_Utf16_Flat_1024	8.6 µs	3.2 µs	×2.7
❌	request[RegExpBenchmark]	7.3 ms	8.2 ms	-11.55%
⚡	JsString_Utf8Length_Latin1_Flat_8192	31 µs	14.1 µs	×2.2
❌	JsString_Utf8Length_Latin1_Flat_32	891.1 ns	1,487.8 ns	-40.1%
❌	EncodeInto_ASCII_8192[TextEncoder][1/0/8192]	3.3 ms	3.7 ms	-11.17%
⚡	JsString_Utf8Length_Latin1_NonFlat_1024	12.1 µs	10.8 µs	+12.16%
⚡	JsString_Utf8Length_Utf16_Flat_256	2.7 µs	2 µs	+35.15%
⚡	JsString_Utf8Length_Utf16_Flat_8192	62.9 µs	14.1 µs	×4.5
⚡	JsString_Utf8Length_Latin1_NonFlat_8192	41.9 µs	25 µs	+67.73%
❌	JsString_Utf8Length_Utf16_Invalid_Flat_256	2.7 µs	3.2 µs	-15.61%

---

_{Comparing ketan/v8-14.5 (81cbb68) with main (3262926)}

Footnotes

1. 129 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[ketanhwr]

Hmm arm build is failing due to a legitimate reason.. checking

external/+http_archive+v8/src/objects/objects-inl.h:1604:27: error: no member named 'IsRequired' in 'v8::internal::WriteBarrier'
 1604 |     DCHECK(!WriteBarrier::IsRequired(*this, value));
      |             ~~~~~~~~~~~~~~^
external/+http_archive+v8/src/base/logging.h:166:43: note: expanded from macro 'DCHECK'
  166 | #define DCHECK(condition) DCHECK_WITH_MSG(condition, #condition)
      |                                           ^~~~~~~~~
external/+http_archive+v8/src/base/logging.h:160:23: note: expanded from macro 'DCHECK_WITH_MSG'
  160 |     if (V8_UNLIKELY(!(condition))) {          \
      |                       ^~~~~~~~~
external/+http_archive+v8/include/v8config.h:665:54: note: expanded from macro 'V8_UNLIKELY'
  665 | # define V8_UNLIKELY(condition) (__builtin_expect(!!(condition), 0))
      |                                                      ^~~~~~~~~
1 error generated.