Merge pull request #4200 from dtrudg/prepare-4.5.0

chore: prep 4.5.0 release

Author: dtrudg

CHANGELOG.md

@@ -1,6 +1,6 @@
 # SingularityCE Changelog
 
-## Unreleased
+## 4.5.0 \[2026-06-25\]
 
 SingularityCE 4.5.0 contains mostly internal code changes and defense-in-depth
 hardening. The majority of the changes made since release 4.4.2 do not alter

INSTALL.md

@@ -228,11 +228,11 @@ git submodule update --init
 By default your clone will be on the `main` branch which is where development
 of SingularityCE happens. To build a specific version of SingularityCE, check
 out a [release tag](https://github.com/sylabs/singularity/tags) before
-compiling. E.g. to build the 4.4.2 release, checkout the
-`v4.4.2` tag:
+compiling. E.g. to build the 4.5.0 release, checkout the
+`v4.5.0` tag:
 
 ```sh
-git checkout --recurse-submodules v4.4.2
+git checkout --recurse-submodules v4.5.0
 ```
 
 ## Compiling SingularityCE