Ignore Coverage for SimpleCache1, ZipStream2

PhpSpreadsheet will use either SimpleCache1/3 (but not both). Likewise for ZipStream2/3. However, only SimpleCache3/Zipstream3 are used while processing code coverage. Indicate this with appropriate annotations.

No executable code is changed.

Author: oleibman

src/PhpSpreadsheet/Collection/Memory/SimpleCache1.php

@@ -9,6 +9,11 @@
  *
  * Alternative implementation should leverage off-memory, non-volatile storage
  * to reduce overall memory usage.
+ *
+ * Either SimpleCache1 or SimpleCache3, but not both, may be used.
+ * For code coverage testing, it will always be SimpleCache3.
+ *
+ * @codeCoverageIgnore
  */
 class SimpleCache1 implements CacheInterface
 {

src/PhpSpreadsheet/Writer/ZipStream2.php

@@ -5,6 +5,12 @@
 use ZipStream\Option\Archive;
 use ZipStream\ZipStream;
 
+/**
+ * Either ZipStream2 or ZipStream3, but not both, may be used.
+ * For code coverage testing, it will always be ZipStream3.
+ *
+ * @codeCoverageIgnore
+ */
 class ZipStream2
 {
     /**