fix: add override keyword in functions (OZ N-09)

[MoonBoi9001]

Motivation:

• This PR addresses the following N-09 OZ audit issue, applying the recommended fixes.

Title:

N-09 Missing override Keyword in Functions

Details:

Throughout the codebase, multiple instances of functions lacking the override keyword were identified:

The pause and unpause functions of the DataServicePausable contract
The pause and unpause functions of the DataServicePausableUpgradeable contract
The setRewardsDestination function of the SubgraphService contract
Functions that override the base contract functions ought to have the override keyword. Otherwise, it can be confusing for readers and developers, leading to potential misunderstandings about a function's origin and behavior. As such, consider using the override keyword for all functions that override base contract functions to enhance code readability and clarity.

Key changes

• Added the override keyword to the functions outlined, applying the recommended fixes.

[openzeppelin-code]

fix: add override keyword in functions (OZ N-09)

Generated at commit: 516a4e3bf2841d5ed764183e48e25df0a5dfc799

🚨 Report Summary

	Severity Level	Results
Contracts	Critical High Medium Low Note Total	2 4 0 15 41 62
Dependencies	Critical High Medium Low Note Total	0 0 0 0 0 0

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For more details view the full report in OpenZeppelin Code Inspector

[tmigone]

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