Bump step-security/harden-runner from 2.7.1 to 2.8.0

Bumps [step-security/harden-runner](https://github.com/step-security/harden-runner) from 2.7.1 to 2.8.0.
- [Release notes](https://github.com/step-security/harden-runner/releases)
- [Commits](step-security/harden-runner@a4aa98b...f086349)

---
updated-dependencies:
- dependency-name: step-security/harden-runner
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/publish-pypi.yml

@@ -18,7 +18,7 @@ jobs:
  id-token: write
  steps:
  - name: Harden Runner
- uses: step-security/harden-runner@a4aa98b93cab29d9b1101a6143fb8bce00e2eac4 # v2.7.1
+ uses: step-security/harden-runner@f086349bfa2bd1361f7909c78558e816508cdc10 # v2.8.0
  with:
  disable-sudo: true
  egress-policy: block

.github/workflows/remove-obsolete-cache.yml

@@ -14,7 +14,7 @@ jobs:
  runs-on: ubuntu-latest
  steps:
  - name: Harden Runner
- uses: step-security/harden-runner@a4aa98b93cab29d9b1101a6143fb8bce00e2eac4 # v2.7.1
+ uses: step-security/harden-runner@f086349bfa2bd1361f7909c78558e816508cdc10 # v2.8.0
  with:
  disable-sudo: true
  egress-policy: block

.github/workflows/tag-testpypi.yml

@@ -18,7 +18,7 @@ jobs:
  id-token: write
  steps:
  - name: Harden Runner
- uses: step-security/harden-runner@a4aa98b93cab29d9b1101a6143fb8bce00e2eac4 # v2.7.1
+ uses: step-security/harden-runner@f086349bfa2bd1361f7909c78558e816508cdc10 # v2.8.0
  with:
  disable-sudo: true
  egress-policy: block