Bump webfactory/ssh-agent from 0.7.0 to 0.8.0 (#27)

Bumps [webfactory/ssh-agent](https://github.com/webfactory/ssh-agent) from 0.7.0 to 0.8.0.
- [Release notes](https://github.com/webfactory/ssh-agent/releases)
- [Changelog](https://github.com/webfactory/ssh-agent/blob/master/CHANGELOG.md)
- [Commits](webfactory/ssh-agent@v0.7.0...v0.8.0)

---
updated-dependencies:
- dependency-name: webfactory/ssh-agent
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/book.yml

@@ -83,7 +83,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Prepare SSH Key
-        uses: webfactory/ssh-agent@v0.7.0
+        uses: webfactory/ssh-agent@v0.8.0
         with:
           ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
       - name: Fetch the Book
@@ -140,7 +140,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Prepare SSH Key
-        uses: webfactory/ssh-agent@v0.7.0
+        uses: webfactory/ssh-agent@v0.8.0
         with:
           ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
       - name: Fetch the Book
@@ -199,7 +199,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Prepare SSH Key
-        uses: webfactory/ssh-agent@v0.7.0
+        uses: webfactory/ssh-agent@v0.8.0
         with:
           ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
       - name: Fetch the Book
@@ -254,7 +254,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Prepare SSH Key
-        uses: webfactory/ssh-agent@v0.7.0
+        uses: webfactory/ssh-agent@v0.8.0
         with:
           ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
       - name: Fetch the Book
@@ -309,7 +309,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Prepare SSH Key
-        uses: webfactory/ssh-agent@v0.7.0
+        uses: webfactory/ssh-agent@v0.8.0
         with:
           ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
       - name: Fetch the Book
@@ -364,7 +364,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Prepare SSH Key
-        uses: webfactory/ssh-agent@v0.7.0
+        uses: webfactory/ssh-agent@v0.8.0
         with:
           ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
       - name: Fetch the Book