Update dependencies and changelog ahead of the 3.5.0 release.

PiperOrigin-RevId: 869221912
Change-Id: I77aa1f898009c5d24218434863d0588ddf8a058b

Author: mmossg

cmake/MujocoDependencies.cmake

@@ -39,12 +39,12 @@ set(MUJOCO_DEP_VERSION_qhull
     CACHE STRING "Version of `qhull` to be fetched."
 )
 set(MUJOCO_DEP_VERSION_Eigen3
-    49623d0c4e1af3c680845191948d10f6d3e92f8a
+    75bcd155c40cb48e647c87c3f29052360255bc9e
     CACHE STRING "Version of `Eigen3` to be fetched."
 )
 
 set(MUJOCO_DEP_VERSION_abseil
-    d38452e1ee03523a208362186fd42248ff2609f6 # LTS 20250814.1
+    255c84dadd029fd8ad25c5efb5933e47beaa00c7 # LTS 20250814.1
     CACHE STRING "Version of `abseil` to be fetched."
 )
 

doc/changelog.rst

@@ -2,8 +2,8 @@
 Changelog
 =========
 
-Upcoming version (not yet released)
------------------------------------
+Version 3.5.0 (February 12, 2026)
+---------------------------------
 
 Significant new features
 ^^^^^^^^^^^^^^^^^^^^^^^^

python/mujoco/CMakeLists.txt

@@ -140,7 +140,7 @@ findorfetch(
   GIT_REPO
   https://github.com/abseil/abseil-cpp
   GIT_TAG
-  d38452e1ee03523a208362186fd42248ff2609f6 # LTS 20250814.1
+  255c84dadd029fd8ad25c5efb5933e47beaa00c7 # LTS 20250814.1
   TARGETS
   ${MUJOCO_PYTHON_ABSL_TARGETS}
   EXCLUDE_FROM_ALL
@@ -173,7 +173,7 @@ findorfetch(
   GIT_REPO
   https://gitlab.com/libeigen/eigen
   GIT_TAG
-  49623d0c4e1af3c680845191948d10f6d3e92f8a
+  75bcd155c40cb48e647c87c3f29052360255bc9e
   TARGETS
   Eigen3::Eigen
   EXCLUDE_FROM_ALL