Update TensorRT img2img community pipeline (#8899)

* Update TensorRT img2img pipeline
Signed-off-by: Asfiya Baig <asfiyab@nvidia.com>

* Update TensorRT version installed
Signed-off-by: Asfiya Baig <asfiyab@nvidia.com>

* make style and quality
Signed-off-by: Asfiya Baig <asfiyab@nvidia.com>

* Update examples/community/stable_diffusion_tensorrt_img2img.py
Co-authored-by: Tolga Cangöz <46008593+tolgacangoz@users.noreply.github.com>

* Update examples/community/README.md
Co-authored-by: Tolga Cangöz <46008593+tolgacangoz@users.noreply.github.com>

* Apply style and quality using ruff 0.1.5
Signed-off-by: Asfiya Baig <asfiyab@nvidia.com>

---------
Signed-off-by: Asfiya Baig <asfiyab@nvidia.com>
Co-authored-by: Tolga Cangöz <46008593+tolgacangoz@users.noreply.github.com>
Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>

examples/community/README.md

@@ -1641,14 +1641,14 @@ from io import BytesIO
 from PIL import Image
 import torch
 from diffusers import DDIMScheduler
-from diffusers.pipelines.stable_diffusion import StableDiffusionImg2ImgPipeline
+from diffusers import DiffusionPipeline
 
 # Use the DDIMScheduler scheduler here instead
 scheduler = DDIMScheduler.from_pretrained("stabilityai/stable-diffusion-2-1",
                                             subfolder="scheduler")
 
 
-pipe = StableDiffusionImg2ImgPipeline.from_pretrained("stabilityai/stable-diffusion-2-1",
+pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-2-1",
                                             custom_pipeline="stable_diffusion_tensorrt_img2img",
                                             variant='fp16',
                                             torch_dtype=torch.float16,