build(deps): bump actions/checkout from 2.4.0 to 3 (#1525)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.4.0 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@ec3a7ce...a12a394)

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

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
(cherry picked from commit 5e078d1)
Signed-off-by: Oliver Gould <[email protected]>

Author: dependabot[bot]

.github/workflows/check-all.yml

@@ -31,7 +31,7 @@ jobs:
       - run: |
           curl --proto =https --tlsv1.3 -vsSfLo /usr/local/bin/cargo-action-fmt "https://github.com/olix0r/cargo-action-fmt/releases/download/release%2F${CARGO_ACTION_FMT_VERSION}/cargo-action-fmt-x86_64-unknown-linux-gnu"
           chmod 755 /usr/local/bin/cargo-action-fmt
-      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+      - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
       - run: cargo fetch
       - run: |
           cargo check --frozen \

.github/workflows/coverage.yml

@@ -14,7 +14,18 @@ jobs:
       image: docker://rust:1.59.0-buster
       options: --security-opt seccomp=unconfined # 🤷
     steps:
-      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
-      - run: cargo install cargo-tarpaulin
-      - run: cargo tarpaulin --verbose --workspace --out Xml
+      - run: apt update && apt install -y cmake clang golang # for boring
+      - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
+      - name: install cargo-tarpaulin ${{ env.CARGO_TARPAULIN_VERSION }}
+        run: |
+          cd "${CARGO_HOME}/bin"
+          curl -sL https://github.com/xd009642/tarpaulin/releases/download/${CARGO_TARPAULIN_VERSION}/cargo-tarpaulin-${CARGO_TARPAULIN_VERSION}-travis.tar.gz | tar xzvf -
+      # XXX(ver) AFAICT, Tarpaulin doesn't allow us to compose a report over multiple invocations,
+      # so we have to choose between getting coverage from unit tests and integration tests (since
+      # integration tests require --no-default-features to avoid flakiness). Currently the
+      # integration tests seem to cover more code, so we skip the unit tests for now :(.
+      #- run: cargo tarpaulin --locked --workspace --exclude=linkerd2-proxy --exclude=linkerd-app-integration --no-run
+      #- run: cargo tarpaulin --locked --workspace --exclude=linkerd2-proxy --exclude=linkerd-app-integration --skip-clean --ignore-tests --no-fail-fast --out=Xml
+      - run: cargo tarpaulin --locked --packages=linkerd-app-integration --no-default-features --skip-clean --no-run
+      - run: cargo tarpaulin --locked --packages=linkerd-app-integration --no-default-features --skip-clean --ignore-tests --no-fail-fast --out=Xml
       - uses: codecov/codecov-action@f32b3a3741e1053eb607407145bc9619351dc93b

.github/workflows/devcontainer.yml

@@ -15,7 +15,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+      - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
       - run: docker build .devcontainer
 
   rust-version:
@@ -38,7 +38,7 @@ jobs:
   devcontainer-image:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+      - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
       - run: |
           export DEBIAN_FRONTEND=noninteractive
           sudo apt-get update

.github/workflows/docker.yml

@@ -15,5 +15,5 @@ jobs:
     env:
       DOCKER_BUILDKIT: "1"
     steps:
-      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+      - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
       - run: docker build . --build-arg PROXY_UNOPTIMIZED=1

.github/workflows/release.yml

@@ -33,7 +33,7 @@ jobs:
     timeout-minutes: 40
     steps:
       - name: git co
-        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
 
       - name: meta
         id: release-tag-meta
@@ -75,7 +75,7 @@ jobs:
       contents: write
     steps:
       - name: git co
-        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
 
       - name: meta
         id: release-tag-meta