Remove psalm from most installations

As Psalm is only used in one single job it can be removed in general
and then reinstalled when it is actually required before it is
executed.

This process allows to keep Psalm in the dev-dependencies so that
constributors still have it available but in CI-runs it needs not
to be installed when it is not executed.

.github/actions/setup-build/action.yaml

@@ -66,6 +66,10 @@ runs:
             shell: bash
             run: composer require ${{ inputs.composer-require }} --dev --no-update --working-dir=${{ inputs.composer-working-dir }}
 
+        -   name: "Remove Psalm from dependencies"
+            shell: bash
+            run: composer remove --dev vimeo/psalm
+
         -   name: "Validate composer.json"
             shell: bash
             run: composer validate --no-check-publish --no-check-lock --working-dir=${{ inputs.composer-working-dir }}

.github/workflows/ci.yaml

@@ -36,7 +36,9 @@ jobs:
 
             -   name: "Psalm"
                 if: always()
-                run: vendor/bin/psalm
+                run: |
+                    composer require -W --dev vimeo/psalm:^5.0
+                    vendor/bin/psalm
 
     unit-tests:
         name: "Unit Tests - PHP ${{ matrix.php-version }}, Sf ${{ matrix.symfony-version }}${{ matrix.dependency-versions && format(', Deps: {0}', matrix.dependency-versions) }}"