Document PARALLEL_BUILD_JOBS in the README

…#60700)

Stdlib: SparseArrays
URL: https://github.com/JuliaSparse/SparseArrays.jl.git
Stdlib branch: release-1.13
Julia branch: backports-release-1.13
Old commit: 26c80c8
New commit: 6b7e9ef
Julia version: 1.13.0-beta1
SparseArrays version: 1.13.0
Bump invoked by: @dkarrasch
Powered by:
[BumpStdlibs.jl](https://github.com/JuliaLang/BumpStdlibs.jl)

Diff:
JuliaSparse/SparseArrays.jl@26c80c8...6b7e9ef

```
$ git log --oneline 26c80c8..6b7e9ef
6b7e9ef Backports to release v1.13 (#665)
0a37c0c Update CI workflow for Julia and checkout action (#659)
1216e80 Separate out tests for the GPL build and do not run them when GPL libs are not present (#658)
0f0cd32 Remove more bounds checks (#661)
d53ae09 Fix generic sparse-dense multiplication (#663)
```

Co-authored-by: dkarrasch <26658441+dkarrasch@users.noreply.github.com>

…#60703)

Stdlib: SparseArrays
URL: https://github.com/JuliaSparse/SparseArrays.jl.git
Stdlib branch: release-1.12
Julia branch: backports-release-1.12
Old commit: f81a30d
New commit: 2376bf8
Julia version: 1.12.4
SparseArrays version: 1.12.0 (Does not match)
Bump invoked by: @dkarrasch
Powered by:
[BumpStdlibs.jl](https://github.com/JuliaLang/BumpStdlibs.jl)

Diff:
JuliaSparse/SparseArrays.jl@f81a30d...2376bf8

```
$ git log --oneline f81a30d..2376bf8
2376bf8 Backports to v1.12.5 (#669)
e545b39 Update CI workflow for Julia and checkout action (#659)
e129aea Separate out tests for the GPL build and do not run them when GPL libs are not present (#658)
```

Co-authored-by: dkarrasch <26658441+dkarrasch@users.noreply.github.com>

…#60774)

Stdlib: SparseArrays
URL: https://github.com/JuliaSparse/SparseArrays.jl.git
Stdlib branch: release-1.11
Julia branch: backports-release-1.11
Old commit: 2420351
New commit: e4ffd9f
Julia version: 1.11.8
SparseArrays version: 1.11.0 (Does not match)
Bump invoked by: @dkarrasch
Powered by:
[BumpStdlibs.jl](https://github.com/JuliaLang/BumpStdlibs.jl)

Diff:
JuliaSparse/SparseArrays.jl@2420351...e4ffd9f

```
$ git log --oneline 2420351..e4ffd9f
e4ffd9f Backports to v1.11 (#670)
1da3028 Separate out tests for the GPL build and do not run them when GPL libs are not present (#658)
```

Co-authored-by: dkarrasch <26658441+dkarrasch@users.noreply.github.com>