Register string extension functions to match pv-go (#439)

Currently, protovalidate-java doesn't register the same string extension
functions at protovalidate-go, making custom CEL rules not supported
across platforms.

Register the CEL string extension functions available in cel-java. These
are identical to the ones available in protovalidate-go except it is
missing a `quote` and `reverse` function. We could implement custom
versions but it would be better to get this addressed upstream for
consistency across CEL runtimes.

Fixes #438.

Support repeated fields in MessageOneofEvaluator (#428)

Update protovalidate (#384)

Signed-off-by: Sri Krishna <[email protected]>

Update to gradle 8.14.3 (#368)

Update to protovalidate v1.0.0 (#347)

Update to [upstream
v1.0.0](https://github.com/bufbuild/protovalidate/releases/tag/v1.0.0).

Simplify tests (#346)

Update tests to just declare unexpected exceptions in throws clause
(don't need to catch them as they will fail the test automatically if
thrown). Update to remove unnecessary type arguments.

Simplify tests (#346)

Update tests to just declare unexpected exceptions in throws clause
(don't need to catch them as they will fail the test automatically if
thrown). Update to remove unnecessary type arguments.

Update protovalidate (#329)

This implements the following upstream changes:
- bufbuild/protovalidate#397
- bufbuild/protovalidate#396
- bufbuild/protovalidate#394

---------

Signed-off-by: Sri Krishna <[email protected]>

Update protovalidate (#329)

This implements the following upstream changes:
- bufbuild/protovalidate#397
- bufbuild/protovalidate#396
- bufbuild/protovalidate#394

---------

Signed-off-by: Sri Krishna <[email protected]>

Add implicit `IGNORE_IF_UNPOPULATED` for `MessageOneofRule` fields (#312

)

bufbuild/protovalidate#382

---------

Signed-off-by: Sri Krishna <[email protected]>
Co-authored-by: Timo Stamm <[email protected]>