Bumps version.io.undertow from 2.3.19.Final to 2.3.20.Final.
Updates io.undertow:undertow-servlet from 2.3.19.Final to 2.3.20.Final

• 5e6c73d Prepare 2.3.20.Final
• 967ec02 Merge pull request from fl4via/backport-fixes_2.3.x
• 2448f7a UNDERTOW-2598 Replace the delayed cleaning algorithm in DirectByteBufferDea...
• e7c28ac Merge pull request from fl4via/backport-fixes_2.3.x
• 39fcfbe UNDERTOW-2598 CVE-2025-9784 At AbstractFramedStreamSinkChannel, safeguard a...
• 1d013b2 UNDERTOW-2598 CVE-2025-9784 Add a delay in the actual direct byte buffer de...
• afbd244 UNDERTOW-2598 CVE-2025-9784 Prevent the dispatch of an exchange if the conn...
• 4610806 UNDERTOW-2598 CVE-2025-9784 Prevent a MadeYouReset HTTP2 attack by sending ...
• c5a9817 UNDERTOW-2235 Properly handle non servlet methods dispatched as error into ...
• 5756047 UNDERTOW-2604 fix potential NPE from alternate ctor
• Additional commits viewable in compare view

Updates io.undertow:undertow-core from 2.3.19.Final to 2.3.20.Final

• 5e6c73d Prepare 2.3.20.Final
• 967ec02 Merge pull request from fl4via/backport-fixes_2.3.x
• 2448f7a UNDERTOW-2598 Replace the delayed cleaning algorithm in DirectByteBufferDea...
• e7c28ac Merge pull request from fl4via/backport-fixes_2.3.x
• 39fcfbe UNDERTOW-2598 CVE-2025-9784 At AbstractFramedStreamSinkChannel, safeguard a...
• 1d013b2 UNDERTOW-2598 CVE-2025-9784 Add a delay in the actual direct byte buffer de...
• afbd244 UNDERTOW-2598 CVE-2025-9784 Prevent the dispatch of an exchange if the conn...
• 4610806 UNDERTOW-2598 CVE-2025-9784 Prevent a MadeYouReset HTTP2 attack by sending ...
• c5a9817 UNDERTOW-2235 Properly handle non servlet methods dispatched as error into ...
• 5756047 UNDERTOW-2604 fix potential NPE from alternate ctor
• Additional commits viewable in compare view