Fix SC2006 in minimize.sh

changes/ticket30079

@@ -0,0 +1,3 @@
+  o Code simplification and refactoring (shell scripts):
+    - Fix shellcheck warning SC2006 in src/test/fuzz/minimize.sh. Resolves
+      issue 30079.

src/test/fuzz/minimize.sh

@@ -7,7 +7,7 @@ if [ ! -d "$1" ] ; then
     exit 1
 fi
 
-which=`basename "$1"`
+which=$(basename "$1")
 
 mkdir "$1.out"
 afl-cmin -i "$1" -o "$1.out" -m none "./src/test/fuzz/fuzz-${which}"