refactor #12885 [Minor][Docs] Bump requirements version (lchrusciel)

This PR was merged into the 1.10 branch.

Discussion
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| Q               | A
| --------------- | -----
| Branch?         | 1.10
| Bug fix?        | yes
| New feature?    | no
| BC breaks?      | no
| Deprecations?   | no
| Related tickets | 
| License         | MIT

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Commits
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5a98c31 [Minor][Docs] Bump requirements version

docs/book/installation/requirements.rst

@@ -29,7 +29,7 @@ PHP required modules and configuration
 **PHP version**:
 
 +---------------+-----------------------+
-| PHP           | ^7.3                  |
+| PHP           | ^7.4|^8.0             |
 +---------------+-----------------------+
 
 **PHP extensions**: