[Docker example] update to new stable theia-traceviewer

Closes #1121

Including updating the various Theia framework packages used in the example app,
to the same version used in the viewer (v1.49.1)

Signed-off-by: Marc Dumais <marc.dumais@ericsson.com>

examples/docker/example-package.json

@@ -18,13 +18,13 @@
     "@emotion/react": "^11.10.5",
     "@emotion/styled": "^11.10.5",
     "@mui/material": "^5.10.14",
-    "@theia/core": "1.45.1",
-    "@theia/navigator": "1.45.1",
-    "@theia/preferences": "1.45.1",
-    "theia-traceviewer": "0.2.0-next.20240229144356.c22cb2c.0"
+    "@theia/core": "1.49.1",
+    "@theia/navigator": "1.49.1",
+    "@theia/preferences": "1.49.1",
+    "theia-traceviewer": "0.2.7"
   },
   "devDependencies": {
-    "@theia/cli": "1.45.1"
+    "@theia/cli": "1.49.1"
   },
   "scripts": {
     "start": "theia start",