Added bedrock 3-5 sonnet cost detials for BedrockAnthropicTokenUsageCallbackHandler (#25104)

Thank you for contributing to LangChain!

- [ ] **PR title**: "package: description"
- Example: "community: Added bedrock 3-5 sonnet cost detials for
BedrockAnthropicTokenUsageCallbackHandler"


- [ ] **PR message**: ***Delete this entire checklist*** and replace
with
    - **Description:** a description of the change
    - **Issue:** the issue # it fixes, if applicable
    - **Dependencies:** any dependencies required for this change
- **Twitter handle:** if your PR gets announced, and you'd like a
mention, we'll gladly shout you out!


- [ ] **Add tests and docs**: If you're adding a new integration, please
include
1. a test for the integration, preferably unit tests that do not rely on
network access,
2. an example notebook showing its use. It lives in
`docs/docs/integrations` directory.


- [ ] **Lint and test**: Run `make format`, `make lint` and `make test`
from the root of the package(s) you've modified. See contribution
guidelines for more: https://python.langchain.com/docs/contributing/

Additional guidelines:
- Make sure optional dependencies are imported within a function.
- Please do not add dependencies to pyproject.toml files (even optional
ones) unless they are required for unit tests.
- Most PRs should not touch more than one package.
- Changes should be backwards compatible.
- If you are adding something to community, do not re-import it in
langchain.

If no one reviews your PR within a few days, please @-mention one of
baskaryan, efriis, eyurtsev, ccurme, vbarda, hwchase17.

Co-authored-by: Naval Chand <navalchand@192.168.1.36>

libs/community/langchain_community/callbacks/bedrock_anthropic_callback.py

@@ -9,6 +9,7 @@ MODEL_COST_PER_1K_INPUT_TOKENS = {
     "anthropic.claude-v2": 0.008,
     "anthropic.claude-v2:1": 0.008,
     "anthropic.claude-3-sonnet-20240229-v1:0": 0.003,
+    "anthropic.claude-3-5-sonnet-20240620-v1:0": 0.003,
     "anthropic.claude-3-haiku-20240307-v1:0": 0.00025,
 }
 
@@ -17,6 +18,7 @@ MODEL_COST_PER_1K_OUTPUT_TOKENS = {
     "anthropic.claude-v2": 0.024,
     "anthropic.claude-v2:1": 0.024,
     "anthropic.claude-3-sonnet-20240229-v1:0": 0.015,
+    "anthropic.claude-3-5-sonnet-20240620-v1:0": 0.015,
     "anthropic.claude-3-haiku-20240307-v1:0": 0.00125,
 }