chore: bump npsim to 1.4.0 (#622)

### Briefly, what does this PR introduce?


### What kind of change does this PR introduce?
- [ ] Bug fix (issue #__)
- [ ] New feature (issue #__)
- [ ] Documentation update
- [ ] Other: __

### Please check if this PR fulfills the following:
- [ ] Tests for the changes have been added
- [ ] Documentation has been added / updated
- [ ] Changes have been communicated to collaborators

### Does this PR introduce breaking changes? What changes might users
need to make to their code?

### Does this PR change default behavior?

packages/npsim/package.py

@@ -17,6 +17,7 @@ class Npsim(CMakePackage):
     maintainers = ["wdconinc"]
 
     version("main", branch="main")
+    version("1.4.0", sha256="77c40277c3439b191e5f7508263b4b0a73c05bda00c8c1408065a2e4479de688")
     version(
         "1.3.0",
         sha256="6870ca80c6255d1a35b0d05c70e86c7f252e8401dfb53759cbec8a93c5d74794",