libwebp: download official tarball + fix homepage

[SpaceIm]

Specify library name and version: lib/1.0

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• I've read the contributing guidelines.
• I've used a recent Conan client version close to the currently deployed.
• I've tried at least one configuration locally with the conan-center hook activated.

[SpaceIm]

mmhh, stuck in pending state

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 4 (e811994dc59acac393c90b255009548bafb99dcc):

• libwebp/1.2.3@:
  All packages built successfully! (All logs)

• libwebp/1.1.0@:
  All packages built successfully! (All logs)

• libwebp/1.2.1@:
  All packages built successfully! (All logs)

• libwebp/1.0.3@:
  All packages built successfully! (All logs)

• libwebp/1.3.0@:
  All packages built successfully! (All logs)

• libwebp/1.2.4@:
  All packages built successfully! (All logs)

• libwebp/1.2.2@:
  All packages built successfully! (All logs)

• libwebp/1.2.0@:
  All packages built successfully! (All logs)

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Conan v2 pipeline (informative, not required for merge) ❌

Note: Conan v2 builds are informative and they are not required for the PR to be merged.

The v2 pipeline failed. Please, review the errors and note this will be required for pull requests to be merged in the near future.

See details:

Failure in build 6 (e811994dc59acac393c90b255009548bafb99dcc):

• libwebp/1.3.0@:
  Didn't run or was cancelled before finishing

• libwebp/1.2.4@:
  Didn't run or was cancelled before finishing

• libwebp/1.2.3@:
  CI failed to create some packages (All logs)

  Logs for packageID 7f153ed74a81d836b2becb3430bfe6cd4060b619:

  [settings]
  arch=x86_64
  build_type=Release
  compiler=msvc
  compiler.runtime=static
  compiler.runtime_type=Release
  compiler.version=192
  os=Windows
  [options]
  */*:shared=False
  

  ********************************************************************************
  conan test conan-center-index\recipes\libwebp\all\test_package\conanfile.py libwebp/1.2.3@#ad8fd379ecd5d996e413d0e22d01f4cf -pr:h C:\J\w\prod-v2\BuildSingleReference\18805\4733c9a3-1a12-4710-afe0-1a499ea9eb57/profile_windows_192_release_static_msvc_release_64.-shared-False.txt -c:h tools.system.package_manager:mode=install -c:h tools.system.package_manager:sudo=True -pr:b C:\J\w\prod-v2\BuildSingleReference\18805\4733c9a3-1a12-4710-afe0-1a499ea9eb57/profile_windows_192_release_static_msvc_release_64.-shared-False.txt -c:b tools.system.package_manager:mode=install -c:b tools.system.package_manager:sudo=True
  ********************************************************************************
  
  -------- Input profiles --------
  Profile host:
  [settings]
  arch=x86_64
  build_type=Release
  compiler=msvc
  compiler.runtime=static
  compiler.runtime_type=Release
  compiler.version=192
  os=Windows
  [options]
  */*:shared=False
  [conf]
  tools.system.package_manager:mode=install
  tools.system.package_manager:sudo=True
  
  Profile build:
  [settings]
  arch=x86_64
  build_type=Release
  compiler=msvc
  compiler.runtime=static
  compiler.runtime_type=Release
  compiler.version=192
  os=Windows
  [options]
  */*:shared=False
  [conf]
  tools.system.package_manager:mode=install
  tools.system.package_manager:sudo=True
  
  
  -------- test_package: Computing dependency graph --------
  Graph root
      libwebp/1.2.3 (test package): C:\J\w\prod-v2\BuildSingleReference\conan-center-index\recipes\libwebp\all\test_package\conanfile.py
  Graph error
      Package 'libwebp/1.2.3' not resolved: libwebp/1.2.3: Cannot load recipe.
  Error loading conanfile at 'C:\J\w\prod-v2\BuildSingleReference\p\8fd8bf116dbe1bab\e\conanfile.py': C:\J\w\prod-v2\BuildSingleReference\p\8fd8bf116dbe1bab\e\conanfile.py not found!
  
  -------- test_package: Computing necessary packages --------
  ERROR: Package 'libwebp/1.2.3' not resolved: libwebp/1.2.3: Cannot load recipe.
  Error loading conanfile at 'C:\J\w\prod-v2\BuildSingleReference\p\8fd8bf116dbe1bab\e\conanfile.py': C:\J\w\prod-v2\BuildSingleReference\p\8fd8bf116dbe1bab\e\conanfile.py not found!
  

• libwebp/1.2.2@:
  All packages built successfully! (All logs)

• libwebp/1.2.1@:
  Didn't run or was cancelled before finishing

• libwebp/1.2.0@:
  Didn't run or was cancelled before finishing

• libwebp/1.1.0@:
  Didn't run or was cancelled before finishing

• libwebp/1.0.3@:
  Didn't run or was cancelled before finishing

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^{Note: To save resources, CI tries to finish as soon as an error is found. For this reason you might find that not all the references have been launched or not all the configurations for a given reference. Also, take into account that we cannot guarantee the order of execution as it depends on CI workload and workers availability.}