deps(deps-dev): bump the dev-dependencies group across 1 directory with 3 updates

Bumps the dev-dependencies group with 3 updates in the / directory: [ruff](https://github.com/astral-sh/ruff), [causal-conv1d](https://github.com/Dao-AILab/causal-conv1d) and [mamba-ssm](https://github.com/state-spaces/mamba).


Updates `ruff` from 0.15.8 to 0.15.21
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.15.8...0.15.21)

Updates `causal-conv1d` from 1.6.0 to 1.6.2.post1
- [Release notes](https://github.com/Dao-AILab/causal-conv1d/releases)
- [Commits](Dao-AILab/causal-conv1d@v1.6.0...v1.6.2.post1)

Updates `mamba-ssm` from 2.3.0 to 2.3.2.post1
- [Release notes](https://github.com/state-spaces/mamba/releases)
- [Commits](state-spaces/mamba@v2.3.0...v2.3.2.post1)

---
updated-dependencies:
- dependency-name: causal-conv1d
  dependency-version: 1.6.2.post1
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: mamba-ssm
  dependency-version: 2.3.2.post1
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: ruff
  dependency-version: 0.15.20
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -80,7 +80,7 @@ Documentation = "https://zhangtaolab.github.io/DNALLM/"
 [project.optional-dependencies]
 dev = [
     "dnallm[test,notebook]",
-    "ruff==0.15.8",
+    "ruff==0.15.21",
     "pre-commit>=3.6.0",
     "mypy>=1.15.0",
     "pandas-stubs>=2.3.0",
@@ -143,8 +143,8 @@ rocm = [
     "torch>=2.5.0,<2.12",
 ]
 mamba = [
-    "causal_conv1d==1.6.0",
-    "mamba-ssm==2.3.0",
+    "causal_conv1d==1.6.2.post1",
+    "mamba-ssm==2.3.2.post1",
     "torch>=2.6.0,<2.12",
 ]