meson: Update pest subproject family

Starting with Rust 1.83 this benign warning is show when compiling the pest dependency:

```
warning: elided lifetime has a name
   --> pest/src/iterators/pairs.rs:330:70
    |
89  | impl<'i, R: RuleType> Pairs<'i, R> {
    |      -- lifetime `'i` declared here
...
330 |     ) -> Filter<FlatPairs<'i, R>, impl FnMut(&Pair<'i, R>) -> bool + '_> {
    |                                                                      ^^ this elided lifetime gets resolved as `'i`
    |
    = note: `#[warn(elided_named_lifetimes)]` on by default
```

Meson, at least as of version 1.7.0, unfortunately does not suppress warnings originating in dependencies.
Upstream has resolved the warning in 2.8.0, so update to that.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34368>

subprojects/packagefiles/pest/meson.build

@@ -1,7 +1,7 @@
 project(
   'pest',
   'rust',
-  version : '2.7.11',
+  version : '2.8.0',
   license :'MIT OR Apache-2.0',
 )
 

subprojects/packagefiles/pest_derive/meson.build

@@ -1,7 +1,7 @@
 project(
   'pest_derive',
   'rust',
-  version : '2.7.11',
+  version : '2.8.0',
   license :'MIT OR Apache-2.0',
 )
 

subprojects/packagefiles/pest_generator/meson.build

@@ -1,7 +1,7 @@
 project(
   'pest_generator',
   'rust',
-  version : '2.7.11',
+  version : '2.8.0',
   license :'MIT OR Apache-2.0',
 )
 

subprojects/packagefiles/pest_meta/meson.build

@@ -1,7 +1,7 @@
 project(
   'pest_meta',
   'rust',
-  version : '2.7.11',
+  version : '2.8.0',
   license :'MIT OR Apache-2.0',
 )
 

subprojects/pest.wrap

@@ -1,6 +1,6 @@
 [wrap-file]
-directory = pest-2.7.11
-source_url = https://crates.io/api/v1/crates/pest/2.7.11/download
-source_filename = pest-2.7.11.tar.gz
-source_hash = cd53dff83f26735fdc1ca837098ccf133605d794cdae66acfc2bfac3ec809d95
+directory = pest-2.8.0
+source_url = https://crates.io/api/v1/crates/pest/2.8.0/download
+source_filename = pest-2.8.0.tar.gz
+source_hash = 198db74531d58c70a361c42201efde7e2591e976d518caf7662a47dc5720e7b6
 patch_directory = pest

subprojects/pest_derive.wrap

@@ -1,6 +1,6 @@
 [wrap-file]
-directory = pest_derive-2.7.11
-source_url = https://crates.io/api/v1/crates/pest_derive/2.7.11/download
-source_filename = pest_derive-2.7.11.tar.gz
-source_hash = 2a548d2beca6773b1c244554d36fcf8548a8a58e74156968211567250e48e49a
+directory = pest_derive-2.8.0
+source_url = https://crates.io/api/v1/crates/pest_derive/2.8.0/download
+source_filename = pest_derive-2.8.0.tar.gz
+source_hash = d725d9cfd79e87dccc9341a2ef39d1b6f6353d68c4b33c177febbe1a402c97c5
 patch_directory = pest_derive

subprojects/pest_generator.wrap

@@ -1,6 +1,6 @@
 [wrap-file]
-directory = pest_generator-2.7.11
-source_url = https://crates.io/api/v1/crates/pest_generator/2.7.11/download
-source_filename = pest_generator-2.7.11.tar.gz
-source_hash = 3c93a82e8d145725dcbaf44e5ea887c8a869efdcc28706df2d08c69e17077183
+directory = pest_generator-2.8.0
+source_url = https://crates.io/api/v1/crates/pest_generator/2.8.0/download
+source_filename = pest_generator-2.8.0.tar.gz
+source_hash = db7d01726be8ab66ab32f9df467ae8b1148906685bbe75c82d1e65d7f5b3f841
 patch_directory = pest_generator

subprojects/pest_meta.wrap

@@ -1,6 +1,6 @@
 [wrap-file]
-directory = pest_meta-2.7.11
-source_url = https://crates.io/api/v1/crates/pest_meta/2.7.11/download
-source_filename = pest_meta-2.7.11.tar.gz
-source_hash = a941429fea7e08bedec25e4f6785b6ffaacc6b755da98df5ef3e7dcf4a124c4f
+directory = pest_meta-2.8.0
+source_url = https://crates.io/api/v1/crates/pest_meta/2.8.0/download
+source_filename = pest_meta-2.8.0.tar.gz
+source_hash = 7f9f832470494906d1fca5329f8ab5791cc60beb230c74815dff541cbd2b5ca0
 patch_directory = pest_meta