fix: semgrep needs to be on PATH

starting with 1.94.0, if semgrep is not on PATH, its not able to run and
throws:

```
Error: exception Unix_error: No such file or directory execvp pysemgrep
```

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 ## On the `main` branch
 
+### Fixes
+
+- When running `semgrep`, its always added to `PATH`,
+  as otherwise semgrep is not able to find `pysemgrep` folder.
+  ([#439](https://github.com/crashappsec/chalk/pull/439))
+
 ## 0.4.13
 
 **Oct 10, 2024**

src/configs/sastconfig.c4m

@@ -93,6 +93,10 @@ func semgrep_system() {
     trace("find_semgrep: Unable to find semgrep in $PATH")
   } else {
     trace("find_semgrep: found semgrep in $PATH: " + result)
+    # ensure semgrep is on PATH
+    # https://github.com/semgrep/semgrep/issues/10652
+    head, tail := path_split(result)
+    result := "PATH=" + head + ":$PATH " + result
   }
 }