Add table github_actions_cache

[WallyGuzman]

• Follow documentation and logic from github_actions_cache
• Add optional filters for key and ref

Example query results

Results

> .output line;
> select
  *
from
  github_actions_cache
where
  repository_full_name = 'turbot/steampipe'
limit 1;

-[ RECORD 1  ]---------------------------------------------------------------------------
login_id             | MDQ6VXNlcjM2MjM0MjY=
repository_full_name | turbot/steampipe
id                   | 5,890,771,769
key                  | Linux-go-build-08d1a3d49be87159e0f3f8a4332138434913c389f37f327d42bfd3b2efbb5f62
ref                  | refs/pull/5008/merge
version              | 523652564e88043e86cdfc9972e7c5aeb8c931ab95bd29448b10984a94d19d94
last_accessed_at     | <null>
created_at           | 2026-07-20T13:14:54Z
size_in_bytes        | 894,309,265
sp_connection_name   | github
sp_ctx               | {"connection_name":"github","steampipe":{"sdk_version":"5.14.0"}}
_ctx                 | {"connection_name":"github","steampipe":{"sdk_version":"5.14.0"}}

> select
  id,
  key,
  version,
  created_at,
  last_accessed_at,
  size_in_bytes
from
  github_actions_cache
where
  repository_full_name = 'turbot/steampipe'
  and ref = 'refs/heads/develop'
limit 1;

-[ RECORD 1  ]---------------------------------------------------------------------------
id               | 5,890,190,229
key              | codeql-dependencies-1-Linux-go-f46945e9e2a201ba5be869eb640afe537b1e79225184d6b230b2f7d2c88e12ab
version          | c21ebd5a0dce85cbcf5074d005b7701b1d571b16c9a7193dd9b5985e36aa8a3d
created_at       | 2026-07-20T12:54:13Z
last_accessed_at | <null>
size_in_bytes    | 877,752,157

> select
  id,
  key,
  version,
  created_at,
  last_accessed_at,
  size_in_bytes
from
  github_actions_cache
where
  repository_full_name = 'turbot/steampipe'
  and key like 'codeql-%'
limit 1;

-[ RECORD 1  ]---------------------------------------------------------------------------
id               | 5,890,190,229
key              | codeql-dependencies-1-Linux-go-f46945e9e2a201ba5be869eb640afe537b1e79225184d6b230b2f7d2c88e12ab
version          | c21ebd5a0dce85cbcf5074d005b7701b1d571b16c9a7193dd9b5985e36aa8a3d
created_at       | 2026-07-20T12:54:13Z
last_accessed_at | <null>
size_in_bytes    | 877,752,157

[cbruno10]

@WallyGuzman Thanks for another PR!

I've added some minor suggestions, can you please have a look? Thanks!