Try running CI on more Julia versions; also update all of the GitHub Actions; also some other CI tweaks (#45)

* Bump the all-github-actions group with 4 updates

Bumps the all-github-actions group with 4 updates: [actions/checkout](https://github.com/actions/checkout), [julia-actions/setup-julia](https://github.com/julia-actions/setup-julia), [actions/cache](https://github.com/actions/cache) and [codecov/codecov-action](https://github.com/codecov/codecov-action).

Updates `actions/checkout` from 2 to 4
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v4)

Updates `julia-actions/setup-julia` from 1 to 2
- [Release notes](https://github.com/julia-actions/setup-julia/releases)
- [Changelog](https://github.com/julia-actions/setup-julia/blob/master/devdocs/making_a_new_release.md)
- [Commits](julia-actions/setup-julia@v1...v2)

Updates `actions/cache` from 1 to 4
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v1...v4)

Updates `codecov/codecov-action` from 1 to 5
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v1...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-github-actions
- dependency-name: julia-actions/setup-julia
  dependency-version: '2'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-github-actions
- dependency-name: actions/cache
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-github-actions
- dependency-name: codecov/codecov-action
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-github-actions
...

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

* Try running CI on more Julia versions

* Use the default job names

* Temporarily comment out the `'1'` line

* Make sure to quote version numbers

* Add an important comment about the `arch` input

* We will just use the default job names (generated by GitHub)

* Use the `CODECOV_TOKEN`

* Include the `'1'` version

---------

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

Author: DilumAluthge

.github/workflows/CI.yml

@@ -7,38 +7,45 @@ on:
   pull_request:
 jobs:
   test:
-    name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         version:
-          - '1'
-          - '1.6'
+          - '1.6' # Previous LTS
+          - '1.7'
+          - '1.8'
+          - '1.9'
+          - '1.10' # Current LTS
+          - '1.11'
+          - '1' # Automatically expands to the latest stable 1.x release of Julia
           - 'nightly'
         os:
           - ubuntu-latest
         arch:
+          # Important note: the value of `arch` only affects the architecture of the Julia binary.
+          # It does not affect the CPU architecture of the GitHub runner (the GitHub virtual machine that runs the job).
+          # GitHub runners are always 64-bit virtual machines.
           - x64
           - x86
         include:
           # test macOS and Windows with latest Julia only
           - os: macOS-latest
             arch: x64
-            version: 1
+            version: '1'
           - os: windows-latest
             arch: x64
-            version: 1
+            version: '1'
           - os: windows-latest
             arch: x86
-            version: 1
+            version: '1'
     steps:
-      - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: actions/cache@v1
+      - uses: actions/cache@v4
         env:
           cache-name: cache-artifacts
         with:
@@ -51,6 +58,7 @@ jobs:
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v5
         with:
           file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}