[RELEASE ONLY CHANGES] Update version references in docs for 1.3 release (#19791)

Bump iOS/SwiftPM and Raspberry Pi version examples on the release/1.3
branch to point at 1.3.0 (and 1.4.0 nightly), following the v1.2.0
release-only doc bump in #18635.

Files:
- `docs/source/getting-started.md`: `swiftpm-0.6.0` example ->
`swiftpm-1.3.0`
- `docs/source/using-executorch-ios.md`: stable example `swiftpm-1.0.0`
-> `swiftpm-1.3.0`; nightly example `swiftpm-1.1.0-20251101` ->
`swiftpm-1.4.0-20260601`; Package.swift example `branch:
"swiftpm-1.0.0"` -> `branch: "swiftpm-1.3.0"`
- `docs/source/raspberry_pi_llama_tutorial.md`: `git clone -b
release/1.0` -> `git clone -b release/1.3`

Release-only changes. Do not merge to main.

Author: shoumikhin

docs/source/getting-started.md

@@ -160,7 +160,7 @@ For a full example of running a model on Android, see the [DeepLabV3AndroidDemo]
 #### Installation
 ExecuTorch supports both iOS and macOS via C++, as well as hardware backends for CoreML, MPS, and CPU. The iOS runtime library is provided as a collection of .xcframework targets and are made available as a Swift PM package.
 
-To get started with Xcode, go to File > Add Package Dependencies. Paste the URL of the ExecuTorch repo into the search bar and select it. Make sure to change the branch name to the desired ExecuTorch version in format “swiftpm-”, (e.g. “swiftpm-0.6.0”).  The ExecuTorch dependency can also be added to the package file manually. See [Using ExecuTorch on iOS](using-executorch-ios.md) for more information.
+To get started with Xcode, go to File > Add Package Dependencies. Paste the URL of the ExecuTorch repo into the search bar and select it. Make sure to change the branch name to the desired ExecuTorch version in format “swiftpm-”, (e.g. “swiftpm-1.3.0”).  The ExecuTorch dependency can also be added to the package file manually. See [Using ExecuTorch on iOS](using-executorch-ios.md) for more information.
 
 #### Runtime APIs
 Models can be loaded and run from Objective-C using the C++ APIs.
@@ -238,4 +238,4 @@ ExecuTorch provides a high-degree of customizability to support diverse hardware
 - [Using ExecuTorch with C++](using-executorch-cpp.md) for embedded and mobile native development.
 - [Profiling and Debugging](using-executorch-troubleshooting.md) for developer tooling and debugging.
 - [API Reference](export-to-executorch-api-reference.rst) for a full description of available APIs.
-- [Examples](https://github.com/pytorch/executorch/tree/main/examples) for demo apps and example code.
+- [Examples](https://github.com/pytorch/executorch/tree/main/examples) for demo apps and example code.

docs/source/raspberry_pi_llama_tutorial.md

@@ -57,7 +57,7 @@ First, clone the ExecuTorch repository with the Raspberry Pi support:
 
 ```bash
 # Create project directory
-mkdir ~/executorch-rpi && cd ~/executorch-rpi &&  git clone -b release/1.0 https://github.com/pytorch/executorch.git &&
+mkdir ~/executorch-rpi && cd ~/executorch-rpi &&  git clone -b release/1.3 https://github.com/pytorch/executorch.git &&
 cd executorch
 ```
 
@@ -391,4 +391,4 @@ source setup_env.sh
 ./llama_main --model_path ./llama3_2.pte --tokenizer_path ./tokenizer.model --seq_len 128 --prompt "What is the meaning of life?"
 ```
 
-Happy Inferencing!
+Happy Inferencing!

docs/source/using-executorch-ios.md

@@ -28,7 +28,7 @@ The prebuilt ExecuTorch runtime, backend, and kernels are available as a [Swift
 
 #### Xcode
 
-In Xcode, go to `File > Add Package Dependencies`. Paste the URL of the [ExecuTorch repo](https://github.com/pytorch/executorch) into the search bar and select it. Make sure to change the branch name to the desired ExecuTorch version in format "swiftpm-<version>", (e.g. "swiftpm-1.0.0"), or a branch name in format "swiftpm-<version>.<year_month_date>" (e.g. "swiftpm-1.1.0-20251101") for a [nightly build](https://ossci-ios.s3.amazonaws.com/list.html) on a specific date.
+In Xcode, go to `File > Add Package Dependencies`. Paste the URL of the [ExecuTorch repo](https://github.com/pytorch/executorch) into the search bar and select it. Make sure to change the branch name to the desired ExecuTorch version in format "swiftpm-<version>", (e.g. "swiftpm-1.3.0"), or a branch name in format "swiftpm-<version>.<year_month_date>" (e.g. "swiftpm-1.4.0-20260601") for a [nightly build](https://ossci-ios.s3.amazonaws.com/list.html) on a specific date.
 
 ![](_static/img/swiftpm_xcode1.png)
 
@@ -61,7 +61,7 @@ let package = Package(
   ],
   dependencies: [
     // Use "swiftpm-<version>.<year_month_day>" branch name for a nightly build.
-    .package(url: "https://github.com/pytorch/executorch.git", branch: "swiftpm-1.0.0")
+    .package(url: "https://github.com/pytorch/executorch.git", branch: "swiftpm-1.3.0")
   ],
   targets: [
     .target(
@@ -958,4 +958,4 @@ rm -rf <YouProjectName>.xcodeproj/project.xcworkspace/xcshareddata/swiftpm \
   ~/Library/Caches/com.apple.dt.Xcode \
   ~/Library/Developer/Xcode/DerivedData
 ```
-**Note:** Ensure Xcode is fully quit before running the terminal command to avoid conflicts with active processes.
+**Note:** Ensure Xcode is fully quit before running the terminal command to avoid conflicts with active processes.