Potential fix for code scanning alert no. 115: Insecure randomness

[robfrank]

Potential fix for https://github.com/ArcadeData/arcadedb/security/code-scanning/115

To fix the problem, we need to replace the use of java.util.Random with java.security.SecureRandom in the code. This change ensures that the random values generated are cryptographically secure and not easily predictable.

1. Identify the lines where java.util.Random is used.
2. Replace the instantiation of java.util.Random with java.security.SecureRandom.
3. Ensure that the rest of the code remains functionally the same, only changing the source of randomness.

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[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ -0.26%	✅ 0.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (b0c6d2b)	68199	43954	64.45%
Head commit (e7a66d0)	68200 (+1)	43775 (-179)	64.19% (-0.26%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1921)	1	0	0.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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