feat(docker)!: Upgrade PNPM to version 8.8.0

See [1] for the changelog. The lockfiles of the synthetic FunTests are
no longer compatible with this PNPM version, therefore update them as
well to fix this error:
```
ERR_PNPM_FROZEN_LOCKFILE_WITH_OUTDATED_LOCKFILE
Cannot perform a frozen installation because the version of the lockfile
is incompatible with this version of pnpm

Try either:
1. Aligning the version of pnpm that generated the lockfile with the
version that installs from it, or
2. Migrating the lockfile so that it is compatible with the newer
version of pnpm, or
3. Using "pnpm install --no-frozen-lockfile"
Note that in CI environments, this setting is enabled by default.
```

[1]: https://github.com/pnpm/pnpm/blob/main/pnpm/CHANGELOG.md#880

Signed-off-by: Marcel Bochtler <[email protected]>

.versions

@@ -14,7 +14,7 @@ NPM_VERSION=8.15.1
 NUGET_INSPECTOR_VERSION=0.9.12
 PHP_VERSION=8.1
 PIPTOOL_VERSION=22.2.2
-PNPM_VERSION=7.8.0
+PNPM_VERSION=8.8.0
 PYENV_GIT_TAG=v2.3.25
 PYTHON_INSPECTOR_VERSION=0.9.8
 PYTHON_PIPENV_VERSION=2022.9.24

Dockerfile

@@ -183,7 +183,7 @@ FROM base AS nodejsbuild
 ARG BOWER_VERSION=1.8.12
 ARG NODEJS_VERSION=18.14.2
 ARG NPM_VERSION=8.15.1
-ARG PNPM_VERSION=7.8.0
+ARG PNPM_VERSION=8.8.0
 ARG YARN_VERSION=1.22.17
 
 ENV NVM_DIR=/opt/nvm

Dockerfile-legacy

@@ -76,7 +76,7 @@ ENV \
     GO_VERSION=1.20.5 \
     HASKELL_STACK_VERSION=2.7.5 \
     NPM_VERSION=8.15.1 \
-    PNPM_VERSION=7.8.0 \
+    PNPM_VERSION=8.8.0 \
     PYTHON_PIPENV_VERSION=2022.9.24 \
     PYTHON_POETRY_VERSION=1.6.1 \
     SBT_VERSION=1.6.1 \