chore(securitymanager): remove deprecated Security manager (#1527)

[xael-fry]

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Helpful things

Fixes

Fixes #1527

Purpose

Fix warning

 AccessControlException in java.security has been deprecated and marked for removal
    [javac]         } catch (AccessControlException e) {
    [javac]                  ^
    [javac] /home/runner/work/play1/play1/framework/src/play/utils/PThreadFactory.java:13: warning: [removal] SecurityManager in java.lang has been deprecated and marked for removal