Canvas: Fix linter errors

Change-Id: I602c1562d4ab2d948bb4dcf6caf66f185585d720
diff --git a/apps/canvas/front/src/components/node-github.tsx b/apps/canvas/front/src/components/node-github.tsx
index 3ae779e..6ece1b0 100644
--- a/apps/canvas/front/src/components/node-github.tsx
+++ b/apps/canvas/front/src/components/node-github.tsx
@@ -100,7 +100,7 @@
 
   useEffect(() => {
     const fetchRepositories = async () => {
-      if (!!!githubService) return;
+      if (!githubService) return;
 
       setLoading(true);
       setError(null);
@@ -129,11 +129,11 @@
                 <Select
                   onValueChange={(value) => field.onChange(Number(value))}
                   value={field.value?.toString()}
-                  disabled={loading || !projectId || !!!githubService}
+                  disabled={loading || !projectId || !githubService}
                 >
                   <FormControl>
                     <SelectTrigger>
-                      <SelectValue placeholder={!!githubService ? "Select a repository" : "GitHub not configured"} />
+                      <SelectValue placeholder={githubService ? "Select a repository" : "GitHub not configured"} />
                     </SelectTrigger>
                   </FormControl>
                   <SelectContent>
@@ -148,7 +148,7 @@
                 <FormMessage />
                 {error && <p className="text-sm text-red-500">{error}</p>}
                 {loading && <p className="text-sm text-gray-500">Loading repositories...</p>}
-                {!!!githubService && (
+                {!githubService && (
                   <Alert variant="destructive" className="mt-2">
                     <AlertCircle className="h-4 w-4" />
                     <AlertDescription>