Set Spack version to v1.0.4 (#51992)

Signed-off-by: Gregory Becker <becker33@llnl.gov>

Set Spack version to 1.0.3

Signed-off-by: Gregory Becker <becker33@llnl.gov>

update version and changelog for 1.1.1

Signed-off-by: Gregory Becker <becker33@llnl.gov>

update version and changelog for 1.1.1

Signed-off-by: Gregory Becker <becker33@llnl.gov>

Update spack version to 1.1.0

Signed-off-by: Gregory Becker <becker33@llnl.gov>

Set the version to v1.0.2

Signed-off-by: Massimiliano Culpo <massimiliano.culpo@gmail.com>

Set version to v1.0.1

Signed-off-by: Harmen Stoppels <me@harmenstoppels.nl>

Backports v1.0.0 (#50798)

* Pin builtin repo to releases/v2025.07
* Add `CHANGELOG.md` and bump version to `1.0.0`

This also includes release notes from 0.23 that were never brought onto `develop`.

---------

Signed-off-by: Gregory Becker <becker33@llnl.gov>
Signed-off-by: Harmen Stoppels <me@harmenstoppels.nl>
Signed-off-by: Todd Gamblin <tgamblin@llnl.gov>
Co-authored-by: Gregory Becker <becker33@llnl.gov>
Co-authored-by: Todd Gamblin <tgamblin@llnl.gov>

Snapshot release 2025-07-06

Snapshot release 2025-06-29