chore(deps): pin dependencies (#564)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://redirect.github.com/actions/checkout) |
action | pinDigest | -> `34e1148` |
|
[alstr/todo-to-issue-action](https://redirect.github.com/alstr/todo-to-issue-action)
| action | pinDigest | -> `c45b007` |

---

### Configuration

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Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

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rebase/retry checkbox.

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- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
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View the [repository job
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Author: canonical-iam

.github/workflows/todo_manual.yaml

@@ -18,12 +18,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
         with:
           fetch-depth: 0
 
       - name: TODOs to Issues
-        uses: alstr/todo-to-issue-action@v5
+        uses: alstr/todo-to-issue-action@c45b007d85c8edf3365b139a9d4c65793e7c674f # v5
         env:
           MANUAL_COMMIT_REF: ${{ inputs.MANUAL_COMMIT_REF }}
           MANUAL_BASE_REF: ${{ inputs.MANUAL_BASE_REF }}

.github/workflows/todo_on_merge.yaml

@@ -10,11 +10,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
         with:
           fetch-depth: 0
 
       - name: TODOs to Issues
-        uses: alstr/todo-to-issue-action@v5
+        uses: alstr/todo-to-issue-action@c45b007d85c8edf3365b139a9d4c65793e7c674f # v5
         with:
           IGNORE: "lib/charms/(?!kratos/).*"