Update Psalm baseline for MixedArrayAccess count

Signed-off-by: Nicolai Ehrhardt <[email protected]>

Author: predictor2718

psalm-baseline.xml

@@ -698,7 +698,7 @@
       <code>$this-&gt;last</code>
       <code>$this-&gt;last</code>
     </LoopInvalidation>
-    <MixedArrayAccess occurrences="51">
+    <MixedArrayAccess occurrences="52">
       <code>$this-&gt;str[$this-&gt;last + 1]</code>
       <code>$this-&gt;str[$this-&gt;last++]</code>
       <code>$this-&gt;str[$this-&gt;last]</code>