Update github actions

Author: mwillsey

.github/workflows/build.yml

@@ -5,9 +5,9 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Cache cargo bin
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ~/.cargo/bin
         key: ${{ runner.os }}-cargo-bin
@@ -18,7 +18,7 @@ jobs:
   nits:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Install cargo deadlinks
       run: |
         curl -L -o ~/.cargo/bin/cargo-deadlinks https://github.com/deadlinks/cargo-deadlinks/releases/download/0.4.2/deadlinks-linux

.github/workflows/docs.yml

@@ -7,15 +7,15 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         persist-credentials: false
     - name: Build Docs
       run: | 
         cargo doc --no-deps --all-features
         touch target/doc/.nojekyll # prevent jekyll from running
     - name: Deploy 🚀
-      uses: JamesIves/github-pages-deploy-action@4.1.5
+      uses: JamesIves/github-pages-deploy-action@4.7.3
       with:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         BRANCH: gh-pages # The branch the action should deploy to.