🤖 [release-1.10] Bump the Pkg stdlib from 484bc3ec0 to 9261a54d3

[DilumAluthgeBot]

Stdlib: Pkg
URL: https://github.com/JuliaLang/Pkg.jl.git
Stdlib branch: release-1.10
Julia branch: release-1.10
Old commit: 484bc3ec0
New commit: 9261a54d3
Julia version: 1.10.0-beta3
Pkg version: 1.10.0
Bump invoked by: @IanButterworth
Powered by: BumpStdlibs.jl

Diff: JuliaLang/Pkg.jl@484bc3e...9261a54

$ git log --oneline 484bc3ec0..9261a54d3
9261a54d3 Merge pull request #3646 from JuliaLang/backports-release-1.10
c75672cd3 fix CI julia version
f61f80653 Make Pkg more resilient to reading older manifests where ex-stdlibs are listed (#3634)
80093e6a3 Fix Pkg.precompile ext races (#3645)
39ec5eca7 remove writing out explicit stdlib paths for the temporary testing manifest (#3640)