Free disk space in github workflow

[katherine-hough]

Description of changes

Removes pre-installed software from the GHA runner to free disk space for the "build and test" GitHub workflow.

Issue #, if available

N/A

Checklist for requesting a review

The change in this PR is (choose one, and delete the other options):

• A change "invisible" to users (e.g., documentation, changes to "internal" crates like cedar-policy-core, cedar-validator, etc.)

I confirm that this PR (choose one, and delete the other options):

• Does not update the CHANGELOG because my change does not significantly impact released code.

I confirm that cedar-spec (choose one, and delete the other options):

• Does not require updates because my change does not impact the Cedar formal model or DRT infrastructure.

I confirm that docs.cedarpolicy.com (choose one, and delete the other options):

• Does not require updates because my change does not impact the Cedar language specification.

[github-actions]

Coverage Report

Head Commit: 8ae35d331f9fa1ba195e1d467862c4b994ea2aa9

Base Commit: 568b50cf2b10dfe9af371f660594d9b18ae6d9c1

Download the full coverage report.

Coverage of Added or Modified Lines of Rust Code

Required coverage: 80.00%

Actual coverage: 100.00%

Status: PASSED ✅

Details

File	Status	Covered	Coverage	Missed Lines

Coverage of All Lines of Rust Code

Required coverage: 80.00%

Actual coverage: 81.91%

Status: PASSED ✅

Details

Package	Status	Covered	Coverage	Base Coverage
cedar-policy	🔴	3245/4677	69.38%	--
cedar-policy-cli	🔴	571/972	58.74%	--
cedar-policy-core	🟢	21169/24931	84.91%	--
cedar-policy-formatter	🟢	1074/1206	89.05%	--
cedar-wasm	🔴	0/29	0.00%	--