[CI] Install Dependabot and update some workflows

Author: giordano

.github/dependabot.yml

@@ -0,0 +1,7 @@
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"

.github/workflows/CI.yml

@@ -25,7 +25,7 @@ jobs:
           - '1.11'
           - 'nightly'
         os:
-          - ubuntu-20.04
+          - ubuntu-24.04
           - macOS-latest
           - windows-latest
         arch:
@@ -38,17 +38,17 @@ jobs:
             arch: x64
             libEnzyme: local
         include:
-          - os: ubuntu-20.04
+          - os: ubuntu-24.04
             arch: x86
             libEnzyme: packaged
             version: '1.10'
             assertions: false
-          - os: ubuntu-20.04
+          - os: ubuntu-24.04
             arch: x64
             libEnzyme: packaged
             version: '1.10'
             assertions: true
-          - os: ubuntu-20.04
+          - os: ubuntu-24.04
             arch: x64
             libEnzyme: packaged
             version: '1.11'

.github/workflows/benchmark_pr.yml

@@ -6,16 +6,22 @@ on:
 permissions:
   pull-requests: write
 
+concurrency:
+  # Skip intermediate builds: always.
+  # Cancel intermediate builds: only if it is a pull request build.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
+
 jobs:
     generate_plots:
         runs-on: ubuntu-latest
 
         steps:
-            - uses: actions/checkout@v2
-            - uses: julia-actions/setup-julia@v1
+            - uses: actions/checkout@v4
+            - uses: julia-actions/setup-julia@v2
               with:
                 version: "1"
-            - uses: julia-actions/cache@v1
+            - uses: julia-actions/cache@v2
             - name: Extract Package Name from Project.toml
               id: extract-package-name
               run: |
@@ -26,8 +32,8 @@ jobs:
                 JULIA_NUM_THREADS: 2
               run: |
                 # Lightweight build step, as sometimes the runner runs out of memory:
-                julia -e 'ENV["JULIA_PKG_PRECOMPILE_AUTO"]=0; import Pkg; Pkg.add("AirspeedVelocity")'
-                julia -e 'ENV["JULIA_PKG_PRECOMPILE_AUTO"]=0; import Pkg; Pkg.build("AirspeedVelocity")'
+                julia --color=yes -e 'ENV["JULIA_PKG_PRECOMPILE_AUTO"]=0; import Pkg; Pkg.add("AirspeedVelocity")'
+                julia --color=yes -e 'ENV["JULIA_PKG_PRECOMPILE_AUTO"]=0; import Pkg; Pkg.build("AirspeedVelocity")'
             - name: Add ~/.julia/bin to PATH
               run: |
                 echo "$HOME/.julia/bin" >> $GITHUB_PATH
@@ -60,15 +66,15 @@ jobs:
                 echo 'Go to "Actions"->"Benchmark a pull request"->[the most recent run]->"Artifacts" (at the bottom).' >> body.md
 
             - name: Find Comment
-              uses: peter-evans/find-comment@v2
+              uses: peter-evans/find-comment@v3
               id: fcbenchmark
               with:
                 issue-number: ${{ github.event.pull_request.number }}
                 comment-author: 'github-actions[bot]'
                 body-includes: Benchmark Results
 
             - name: Comment on PR
-              uses: peter-evans/create-or-update-comment@v3
+              uses: peter-evans/create-or-update-comment@v4
               with:
                 comment-id: ${{ steps.fcbenchmark.outputs.comment-id }}
                 issue-number: ${{ github.event.pull_request.number }}

.github/workflows/scripts_deploy.yml

@@ -9,23 +9,23 @@ on:
 
 jobs:
   docs:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1'
-      - uses: julia-actions/cache@v1
+      - uses: julia-actions/cache@v2
       - run: |
-          julia --project=docs -e '
+          julia --color=yes --project=docs -e '
             using Pkg
             Pkg.develop([PackageSpec(path="lib/EnzymeCore"), PackageSpec(path=pwd()), PackageSpec(path="lib/EnzymeTestUtils")])
             Pkg.instantiate()'
         env:
           JULIA_PKG_SERVER_REGISTRY_PREFERENCE: eager
       - run: |
-          julia --project=docs -e '
+          julia --color=yes --project=docs -e '
             using Documenter: DocMeta, doctest
             using Enzyme
             DocMeta.setdocmeta!(Enzyme, :DocTestSetup, :(using Enzyme); recursive=true)