manually update nightly version to 2026-06-11. #754

Job	Run time
Cross test	1m 33s
Check WASM	36s
Test 32-bit version	43s
Bench - nightly toolchain	2m 2s
Docs - nightly toolchain	1m 41s
Lint - nightly toolchain	2m 13s
Test - msrv toolchain (recent)	1m 40s
Docs - stable toolchain	1m 24s
Test - stable toolchain (recent)	5m 57s
Test - nightly toolchain (recent)	6m 7s
	23m 56s

Provide feedback