Correct language tags on five non-YAML code examples

Five blocks in "Remove access to public registries" are tagged `yaml copy`
but contain other formats: two yarn.lock excerpts, a pip.conf INI section,
a Pipfile TOML section, and a pyproject.toml TOML section. None parse as
YAML, and each is highlighted with the wrong grammar.

Retagged as `text`, which is already used elsewhere in content/ for
formats without a dedicated tag. The seven genuine dependabot.yml examples
in this article are unchanged.

Author: SurefireStudios

content/code-security/how-tos/secure-your-supply-chain/manage-your-dependency-security/remove-access-to-public-registries.md

@@ -164,7 +164,7 @@ Define the private registry configuration in a `dependabot.yml` file. For more i
 
 To ensure the private registry is listed as the dependency source in the project's `yarn.lock` file, run `yarn install` on a machine with private registry access. Yarn should update the `resolved` field to include the private registry URL.
 
-```yaml copy
+```text copy
 encoding@^0.1.11:
   version "0.1.13"
   resolved "https://private_registry_url/encoding/-/encoding-0.1.13.tgz#56574afdd791f54a8e9b2785c0582a2d26210fa9"
@@ -205,7 +205,7 @@ To ensure the private registry is listed as the dependency source in the project
 
 {% raw %}
 
-```yaml copy
+```text copy
 encoding@^0.1.11:
   version "0.1.13"
   resolved "https://private_registry_url/encoding/-/encoding-0.1.13.tgz#56574afdd791f54a8e9b2785c0582a2d26210fa9"
@@ -298,7 +298,7 @@ Define the private registry configuration in a `dependabot.yml` file. For more i
 
 Add the private registry URL to the `[global]` section of the `pip.conf` file and check the file into the repository.
 
-   ```yaml copy
+   ```text copy
    [global]
    timeout = 60
    index-url = https://private_registry_url
@@ -338,7 +338,7 @@ To configure Pipenv to only access private registries, remove `replaces-base` fr
 
 Add the private registry URL to the `[[source]]` section of the `Pipfile` file and check the file into the repository.
 
-```yaml copy
+```text copy
 [[source]]
 url = "https://private_registry_url"
 verify_ssl = true
@@ -351,7 +351,7 @@ To configure Poetry to only access private registries, set `replaces-base: true`
 
 Add the private registry url to the `[[tool.poetry.source]]` section of the `pyproject.toml` file and checked it in the repository.
 
-```yaml copy
+```text copy
 [[tool.poetry.source]]
 name = "private"
 url = "https://private_registry_url"