add Declarations in Conditionals to 2025/11 agenda

Author: dcrousso

2025/11.md

@@ -118,6 +118,7 @@ When applicable, use these emoji as a prefix to the agenda item topic.
     | 1 | 15m | TypedArray Find Within ([Slides](https://docs.google.com/presentation/d/1RIhMpf4gY2wX0KZcmCUU6i9l9Ay7WBu0vY4vIsJUwTg/edit?slide=id.g38e87ed9df8_0_0#slide=id.g38e87ed9df8_0_0)) | James Snell |
     | 1 | 30m | [`await` dictionary](https://github.com/tc39/proposal-await-dictionary/) for Stage 2 or 2.7 ([spec](https://tc39.es/proposal-await-dictionary/)) | Ashley Claymore |
     | 1 | 45m | [`Error.captureStackTrace`](https://github.com/tc39/proposal-error-capturestacktrace) for Stage 2 ([Slides](https://docs.google.com/presentation/d/1c3vpsgkUSD2qWCl_6RICnykWLYm2Tc7Dk_uusBKNvc8)) | Daniel Minor |
+    | 1 | 30m | [Declarations in Conditionals](https://github.com/tc39/proposal-Declarations-in-Conditionals) for Stage 2 ([spec](https://tc39.es/proposal-Declarations-in-Conditionals/)) | Devin Rousso |
     | 0 | 20m | [Iterator Join](https://github.com/bakkot/proposal-iterator-join) for stage 1, 2, or 2.7 ([spec](https://bakkot.github.io/proposal-iterator-join/), [slides](https://docs.google.com/presentation/d/1jclIOSbSdyepVCiYXQ4eXc2Uh8FBnBKnFOtsx12N3r0/edit?usp=sharing)) | Kevin Gibbons |
     | 0 | 30m | [Comparisons](https://github.com/JakobJingleheimer/proposal-comparisons) for stage 1 ([slides](https://docs.google.com/presentation/d/1tu8yK57yMDdBsD4FgDX7GuRndLZfqvrukEG_AukYeJU/view)) | Jacob Smith |