Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/deploy.yml

@@ -19,7 +19,7 @@ jobs:
       CARGO_TERM_COLOR: always
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Install mdbook

.github/workflows/echidna.yml

@@ -135,10 +135,10 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Checkout Damn Vulnerable DeFi solutions
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         if: startsWith(matrix.workdir, 'dvdefi')
         with:
           repository: crytic/damn-vulnerable-defi-echidna

.github/workflows/lint_format.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Node.js
         uses: actions/setup-node@v3

.github/workflows/lint_links.yml

@@ -19,7 +19,7 @@ jobs:
   markdown-link-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: gaurav-nelson/github-action-markdown-link-check@v1
         with:
           use-quiet-mode: "yes"

.github/workflows/manticore.yml

@@ -21,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python 3.8
         uses: actions/setup-python@v4
         with:

.github/workflows/slither.yml

@@ -21,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python 3.8
         uses: actions/setup-python@v4
         with: