chore(deps): bump gam7 from 7.19.0 to 7.28.12

Bumps [gam7](https://github.com/GAM-team/GAM) from 7.19.0 to 7.28.12.
- [Release notes](https://github.com/GAM-team/GAM/releases)
- [Commits](GAM-team/GAM@v7.19.00...v7.28.12)

---
updated-dependencies:
- dependency-name: gam7
  dependency-version: 7.28.12
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -12,7 +12,7 @@ authors = [
 requires-python = ">=3.11"
 dependencies = [
     "click==8.2.1",
-    "gam7==7.19.0",
+    "gam7==7.28.12",
     "pandas==2.3.3",
     "tzdata",
 ]