fix: adding valid pem test

Author: afham123

pkg/postprocess/pem_test.go

@@ -26,6 +26,14 @@ func TestIsPem(t *testing.T) {
 			[]byte("Non-pem File"),
 			false,
 		},
+		{
+			"Valid private pem file",
+			[]byte{45, 45, 45, 45, 45, 66, 69, 71, 73, 78, 32, 69, 78, 67, 82, 89, 80, 84, 69, 68, 32, 80, 82, 73, 86, 65, 84,
+				69, 32, 75, 69, 89, 45, 45, 45, 45, 45, 10, 116, 101, 115, 116, 32,
+				112, 97, 115, 115, 119, 111, 114, 100, 10, 45, 45, 45, 45, 45, 69, 78, 68, 32, 69, 78, 67,
+				82, 89, 80, 84, 69, 68, 32, 80, 82, 73, 86, 65, 84, 69, 32, 75, 69, 89, 45, 45, 45, 45, 45},
+			true,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {