Successful merges:

• Suggest considering casting fn item as fn pointer in more cases #133382 (Suggest considering casting fn item as fn pointer in more cases)
• Test pipes also when not running on Windows and Linux simultaneously #136092 (Test pipes also when not running on Windows and Linux simultaneously)
• Remove duplicated code in RISC-V asm bad-reg test #136190 (Remove duplicated code in RISC-V asm bad-reg test)
• ci: remove unused windows runner #136192 (ci: remove unused windows runner)
• Properly check that array length is valid type during built-in unsizing in index #136205 (Properly check that array length is valid type during built-in unsizing in index)
• Update mdbook to 0.4.44 #136211 (Update mdbook to 0.4.44)
• Tweak &mut self suggestion span #136212 (Tweak &mut self suggestion span)
• Make crate AST mutation accessible for driver callback #136214 (Make crate AST mutation accessible for driver callback)

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