refactor: minor changes on Prefect deployment scripts

Author: CyprienKelma

prefect.yaml

@@ -21,7 +21,9 @@ deployments:
           branch: "{{ prefect.variables.branch_name }}"
           repository: https://github.com/Bafbi/projet-m2-bi.git
       - prefect.deployments.steps.run_shell_script:
-          script: pip install uv && uv pip install -r requirements.txt
+          script: |
+            pip install uv
+            uv pip install -r requirements.txt
           directory: "{{ git-clone.directory }}"
 
     # flow-specific fields
@@ -52,7 +54,9 @@ deployments:
           branch: main
           repository: https://github.com/Bafbi/projet-m2-bi.git
       - prefect.deployments.steps.run_shell_script:
-          script: pip install uv && uv pip install -r requirements.txt
+          script: |
+            pip install uv
+            uv pip install -r requirements.txt
           directory: "{{ git-clone.directory }}"
 
     # flow-specific fields
@@ -82,7 +86,9 @@ deployments:
           branch: main
           repository: https://github.com/Bafbi/projet-m2-bi.git
       - prefect.deployments.steps.run_shell_script:
-          script: pip install uv && uv pip install -r requirements.txt
+          script: |
+            pip install uv
+            uv pip install -r requirements.txt
           directory: "{{ git-clone.directory }}"
 
     # flow-specific fields