Merge #3989

3989: Improve test suite CI for manual trigger events r=irevoire a=curquiza

# Why?

To be able to test https://github.com/meilisearch/meilisearch/issues/3988 before merging the PR solving it

# How do we ensure this PR works?

I triggered `workflow_dispatch` (i.e. manual trigger) on this branch, and we can see all the jobs have been triggered (even if some of them are failing -> it's another issue)
https://github.com/meilisearch/meilisearch/actions/runs/5810609073

We can see the tests triggered by the PR are restricted as expected: https://github.com/meilisearch/meilisearch/actions/runs/5810605977

Co-authored-by: curquiza <clementine@meilisearch.com>

.github/workflows/test-suite.yml

@@ -37,7 +37,7 @@ jobs:
           toolchain: stable
           override: true
       - name: Setup test with Rust nightly
-        if: github.event_name == 'schedule'
+        if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
         uses: actions-rs/toolchain@v1
         with:
           toolchain: nightly
@@ -78,12 +78,12 @@ jobs:
           args: --locked --release --all
 
   test-all-features:
-    name: Tests all features on cron schedule only
+    name: Tests all features
     runs-on: ubuntu-latest
     container:
       # Use ubuntu-18.04 to compile with glibc 2.27, which are the production expectations
       image: ubuntu:18.04
-    if: github.event_name == 'schedule'
+    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
     steps:
       - uses: actions/checkout@v3
       - name: Install needed dependencies
@@ -110,7 +110,7 @@ jobs:
     runs-on: ubuntu-latest
     container:
       image: ubuntu:18.04
-    if: github.event_name == 'schedule'
+    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
     steps:
       - uses: actions/checkout@v3
       - name: Install needed dependencies