Bump pypi-attestations from 0.0.25 to 0.0.26

Bumps [pypi-attestations](https://github.com/trailofbits/pypi-attestations) from 0.0.25 to 0.0.26.
- [Release notes](https://github.com/trailofbits/pypi-attestations/releases)
- [Changelog](https://github.com/trailofbits/pypi-attestations/blob/main/CHANGELOG.md)
- [Commits](trailofbits/pypi-attestations@v0.0.25...v0.0.26)

---
updated-dependencies:
- dependency-name: pypi-attestations
  dependency-version: 0.0.26
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pyproject.toml

@@ -104,7 +104,7 @@ lint = [
     "types-urllib3==1.26.25.14",
     "pyright==1.1.400",
     "pytest>=8.0",
-    "pypi-attestations==0.0.25",
+    "pypi-attestations==0.0.26",
     "betterproto==2.0.0b6",
 ]
 test = [
@@ -141,7 +141,7 @@ lint = [
 package = [
     "betterproto==2.0.0b6",  # resolution fails without betterproto
     "build",
-    "pypi-attestations==0.0.25",
+    "pypi-attestations==0.0.26",
     "twine>=6.1",
 ]
 test = [