chore(deps): pin dependencies

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/cache	action	pinDigest	-> e12d46a
actions/checkout	action	pinDigest	-> 692973e
docker/build-push-action	action	pinDigest	-> ca052bb
docker/login-action	action	pinDigest	-> 9780b0c
docker/setup-buildx-action	action	pinDigest	-> 988b5a0

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Run Details - tfws-ops-test

Terraform Cloud Plan Output

Plan: 6 to add, 0 to change, 0 to destroy.

Details : https://app.terraform.io/app/freecodecamp/workspaces/tfws-ops-test/runs/run-CLT19mEPuqPNq5Cs

Warning

Please note that the plan output provided may not accurately reflect the impact on the Terraform project you are currently working on in this Pull Request. The CI checks are merely a sanity test to verify that the versions in the lock file are valid and functional. Confirm the actual Terraform plan by running the corresponding project on your machine or on TFC.