Bump undertow-core from 2.1.6.Final to 2.2.11.Final in /samples/server/petstore/java-undertow

Created by: dependabot[bot]

Bumps undertow-core from 2.1.6.Final to 2.2.11.Final.

Commits

• df0f10c Prepare 2.2.11.Final
• 9d12c9e Merge pull request #1174 from baranowb/UNDERTOW-1869_v2
• c6569f4 Merge pull request #1114 from baranowb/UNDERTOW-1568
• bec30b1 Merge pull request #1246 from fl4via/UNDERTOW-1910
• 47b96f2 Merge pull request #1201 from boris-unckel/UNDERTOW-1915_remove_unneccesary_code
• a3add8b Merge pull request #1205 from TBlueF/fix/pre-compressed-npe
• 3c6f60d Merge pull request #1233 from fl4via/UNDERTOW-1929
• 7582e96 [UNDERTOW-1910] Remove UndertowOptions.DEFAULT_WRITE_TIMEOUT, and add system ...
• 30c0dbb [UNDERTOW-1869] At InMemorySessionManager.createSession, replace the synchron...
• 5a8e3a8 [UNDERTOW-1869] synchronize session/id checks on session creation
• Additional commits viewable in compare view

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