Update submodule to latest master in microsoft/main

[bot-for-go]

Hi! I'm a bot, and this is an automatically generated upstream sync PR. 🔃

After submitting the PR, I will attempt to enable auto-merge in the "merge commit" configuration.

For more information, visit sync documentation in microsoft/go-infra.

Upstream commits included in this update

• 64c0b14cf3 net/http/internal/http2: don't pin frame-sized write buffers on idle conns
• 3127f7b441 net/http/internal/http2: don't pin frame-sized read buffers on idle conns
• e2a74e80b2 net/http: don't pin bufio buffers on idle HTTP/1 keep-alive connections
• 94819a5099 net/http/internal/http2: turn Framer.getReadBuf func field into a method
• 49c3ea6464 go/types, types2: unification should never see nil types
• 6939463d82 go/types, types2: do nil check on correct variable Tsig, not T
• a14b543326 net/http: populate Request.TLS from HTTP/2 connection state
• 54ace3ff80 Revert "cmd/compile: support unified V5 export data (method indices)"
• c5612f0ccf simd/archsimd/_gen/simdgen: use "mem" consistently for memory operands
• 6422d573b2 simd/archsimd/_gen/simdgen: refactor operand sorting
• fc987b55b9 cmd/compile: support unified V5 export data (method indices)
• 29578004ee cmd/vendor: update golang.org/x/tools to 89ed5c3
• 40e7643c46 runtime: fold interface type into hash
• 4cff6b2647 cmd/compile/internal/ssa: reestablish SSA form after regalloc
• 3a7e898c69 cmd/dist: use GOMAXPROCS as maxbg value for builds
• 16516099d7 cmd/compile: use subroutines for eq/hash functions of large types
• 558faa4c47 cmd/compile/internal/ssa: move ssa rewrite packages to ssa/rewrite

View full diff on GitHub

[review-bot-for-go]

Thanks! Auto-approving.

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[Copilot]

🔵 Needs a closer look

It is a submodule bump that pulls in a broad set of upstream changes, and the submodule contents/diff aren’t available here to validate the resulting integrated state.

Pull request overview

This PR performs an automated upstream sync by advancing the go submodule to the latest master from microsoft/main, bringing in recent upstream Go changes (notably in net/http, go/types, and the compiler toolchain).

Changes:

• Update the go submodule pointer to a newer upstream commit range.
• Ingest upstream fixes and refactors included in the sync (per PR description commit list).

File summaries

File	Description
go (submodule)	Advances the pinned upstream Go source to the latest master, incorporating the listed upstream commits.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 0
• Review effort level: Lite

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