Update changelog, and phpstan appeasement

CHANGELOG.md

@@ -30,6 +30,7 @@ and this project adheres to [Semantic Versioning](https://semver.org).
 - Use of `nb` rather than `no` as the locale language code for Norsk Bokmål.
 
 ### Fixed
+- Resolve default values when a null argument is passed for HLOOKUP(), VLOOKUP() and ADDRESS() functions [Issue #2120](https://github.com/PHPOffice/PhpSpreadsheet/issues/2120) - [PR #2121](https://github.com/PHPOffice/PhpSpreadsheet/pull/2121)
 - Fixed incorrect R1C1 to A1 subtraction formula conversion (`R[-2]C-R[2]C`) [Issue #2076](https://github.com/PHPOffice/PhpSpreadsheet/pull/2076) [PR #2086](https://github.com/PHPOffice/PhpSpreadsheet/pull/2086)
 - Correctly handle absolute A1 references when converting to R1C1 format [PR #2060](https://github.com/PHPOffice/PhpSpreadsheet/pull/2060)
 - Correct default fill style for conditional without a pattern defined [Issue #2035](https://github.com/PHPOffice/PhpSpreadsheet/issues/2035) [PR #2050](https://github.com/PHPOffice/PhpSpreadsheet/pull/2050)

phpstan-baseline.neon

@@ -2240,11 +2240,6 @@ parameters:
 			count: 1
 			path: src/PhpSpreadsheet/DocumentGenerator.php
 
-		-
-			message: "#^Cannot access offset 0 on \\(int\\|string\\)\\.$#"
-			count: 2
-			path: src/PhpSpreadsheet/DocumentGenerator.php
-
 		-
 			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\HashTable\\:\\:getIndexForHashCode\\(\\) should return int but returns int\\|string\\|false\\.$#"
 			count: 1

src/PhpSpreadsheet/DocumentGenerator.php

@@ -78,6 +78,7 @@ public static function generateFunctionListByName(array $phpSpreadsheetFunctions
         $result = "# Function list by name\n";
         $lastAlphabet = null;
         foreach ($phpSpreadsheetFunctions as $excelFunction => $functionInfo) {
+            /** @var string $excelFunction */
             $lengths = [25, 31, 37];
             if ($lastAlphabet !== $excelFunction[0]) {
                 $lastAlphabet = $excelFunction[0];