Update submodule to latest master in microsoft/main

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Upstream commits included in this update

• 63d836396a os: strip trailing slashes in RemoveAll on Plan 9
• ee05e88ea6 simd: remove simd/testdata/ip
• db97d07dbb all: use path for go.mod module path
• f20c97b756 lib/time: update to 2026c/2026c
• 0a9b01c5e1 crypto/mlkem: improved semi-expanded wycheproof tests
• 4d1000c44e cmd/go: split test_vet script test for improved parallelism
• 10f7480a0e cmd/go: split build_overlay script test to improve parallelism
• c1e0cd1296 cmd/fix: pull in CL 791660
• 999c71883b go/types, types2: copy test from issue48703 into its own file
• 0af88e584c cmd/gofmt: correctly truncate symlinks instead of buggy mangling

View full diff on GitHub

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