Update images digests (#397)

Update images digests

```release-note
NONE
```


## Changes
<details>

```diff
diff --git a/.github/workflows/mega-module.yaml b/.github/workflows/mega-module.yaml
index 1a11b05..78758eb 100644
--- a/.github/workflows/mega-module.yaml
+++ b/.github/workflows/mega-module.yaml
@@ -77,7 +77,7 @@ jobs:
     - working-directory: images
       env:
         TF_VAR_target_repository: localhost:5000/tf-apko
-        APKO_IMAGE: ghcr.io/wolfi-dev/sdk:latest@sha256:055f990c8ce28987bf249eafba3011e47f3decff35e8a07aacb76475a7a4457d
+        APKO_IMAGE: ghcr.io/wolfi-dev/sdk:latest@sha256:48e8649ff6a26ba32533be015d8dbe4c5014860f6cb82ce7fdcadb02363e4afc
       run: |
         terraform init
 
```

</details>

Co-authored-by: mattmoor <2442466+mattmoor@users.noreply.github.com>

.github/workflows/mega-module.yaml

@@ -77,7 +77,7 @@ jobs:
     - working-directory: images
       env:
         TF_VAR_target_repository: localhost:5000/tf-apko
-        APKO_IMAGE: ghcr.io/wolfi-dev/sdk:latest@sha256:055f990c8ce28987bf249eafba3011e47f3decff35e8a07aacb76475a7a4457d
+        APKO_IMAGE: ghcr.io/wolfi-dev/sdk:latest@sha256:48e8649ff6a26ba32533be015d8dbe4c5014860f6cb82ce7fdcadb02363e4afc
       run: |
         terraform init